Bearings

2050 Products in this selection
Combined category including sub-categories of bearings. These include needle roller inner rings, one way, needle roller with inner ring, needle roller without inner ring, plastic, conveyor, pivot, single row ball, grooved od, spherical od, thrust ball, double row ball, thrust ball washers only, thrust roller, yoyo, tapered roller set, tapered roller cup, tapered roller cone, self clinching, spherical od radial ball, angular contact, 4 point contact, special applications, disk cleaning applications, pool equipment, mri tables, special type, and dental applications.
Small Parts & Bearings

Additional resources:

A more comprehensive listing may be found on the MBA Minibearings main store at Bearings.
ID (d) O.D. (D) Width (W) W1 W2 N Indicative
Image
ID (d)
4.000
mm
O.D. (D)
8.000
mm
Width (W)
3.000
mm
Single Row Ball Bearings - 4x8x3 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: MR84A-ZZS-ECO (PK-5) Single Row Ball Bearings - 4x8x3 mm Unflanged - Chrome Steel SAE 52100 Bearing
33 units (165 pcs) Available Now | Further orders can be expected around Sat, Jul 25, 2026
$3.95 AUD
$3.95 AUD
Per 5
ID (d) O.D. (D) Width (W) W1 Indicative
Image
ID (d)
4.000
mm
O.D. (D)
8.000
mm
Width (W)
3.000
mm
Single Row Ball Bearings - 4x8x3 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: MR84A-ZZS-ECO (PK-5) Single Row Ball Bearings - 4x8x3 mm Unflanged - Chrome Steel SAE 52100 Bearing
33 units (165 pcs) Available Now | Further orders can be expected around Sat, Jul 25, 2026
$3.95 AUD
$3.95 AUD
Per 5
View the product page first if you are unsure.
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
O.D. (D)
8.000
mm
+ 0.000 / - 0.007
(Equiv. 0.315 in.)
Width (W)
3.000
mm
+ 0.000 / - 0.120
(Equiv. 0.118 in.)
1051264 | SMR84A-ZZ-MC3-JP6 (Each) --- Single Row Ball Bearings - 4x8x3 mm Unflanged - Stainless Steel AISI 440C Bearing
Material: Stainless Steel AISI 440C    Type: P6   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SMR84A-ZZ-MC3-JP6 (Each) Single Row Ball Bearings - 4x8x3 mm Unflanged - Stainless Steel AISI 440C Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Aug 07, 2026
$22.68 AUD
$22.68 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
O.D. (D)
8.000
mm
+ 0.000 / - 0.007
(Equiv. 0.315 in.)
Width (W)
3.000
mm
+ 0.000 / - 0.120
(Equiv. 0.118 in.)
1051264 | SMR84A-ZZ-MC3-JP6 (Each) --- Single Row Ball Bearings - 4x8x3 mm Unflanged - Stainless Steel AISI 440C Bearing
Material: Stainless Steel AISI 440C    Type: P6   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SMR84A-ZZ-MC3-JP6 (Each) Single Row Ball Bearings - 4x8x3 mm Unflanged - Stainless Steel AISI 440C Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Aug 07, 2026
$22.68 AUD
$22.68 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
8.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.315 in.)
Width (W)
3.000
mm
+ 0.000 / - 0.125
(Equiv. 0.118 in.)
Single Row Ball Bearings - 4x8x3 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SMR84A-ZZ-MC3 (Each) Single Row Ball Bearings - 4x8x3 mm Unflanged - Stainless Steel AISI 440C Bearing
163 Available Now | Further orders can be expected around Sat, Jul 25, 2026
$6.86 AUD
$6.86 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
8.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.315 in.)
Width (W)
3.000
mm
+ 0.000 / - 0.125
(Equiv. 0.118 in.)
Single Row Ball Bearings - 4x8x3 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SMR84A-ZZ-MC3 (Each) Single Row Ball Bearings - 4x8x3 mm Unflanged - Stainless Steel AISI 440C Bearing
163 Available Now | Further orders can be expected around Sat, Jul 25, 2026
$6.86 AUD
$6.86 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
O.D. (D)
8.000
mm
+ 0.000 / - 0.007
(Equiv. 0.315 in.)
Width (W)
3.000
mm
+ 0.000 / - 0.120
(Equiv. 0.118 in.)
Single Row Ball Bearings - 4x8x3 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: P6   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SMR84A-MC3-JP6-AF12 (Each) Single Row Ball Bearings - 4x8x3 mm Unflanged - Stainless Steel AISI 440C Bearing
109 Available Now | Further orders can be expected around Tue, Sep 15, 2026
$7.14 AUD
$7.14 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
O.D. (D)
8.000
mm
+ 0.000 / - 0.007
(Equiv. 0.315 in.)
Width (W)
3.000
mm
+ 0.000 / - 0.120
(Equiv. 0.118 in.)
Single Row Ball Bearings - 4x8x3 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: P6   
Category: Bearings - Single Row Ball - Unflanged
Part Number: SMR84A-MC3-JP6-AF12 (Each) Single Row Ball Bearings - 4x8x3 mm Unflanged - Stainless Steel AISI 440C Bearing
109 Available Now | Further orders can be expected around Tue, Sep 15, 2026
$7.14 AUD
$7.14 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
8.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.315 in.)
Width (W)
3.000
mm
+ 0.000 / - 0.125
(Equiv. 0.118 in.)
W2
9.200
mm
N
0.600
mm
Single Row Ball Bearings - 4x8x3 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: SFMR84A-ZZ-MC3 (Each) Single Row Ball Bearings - 4x8x3 mm Flanged - Stainless Steel AISI 440C Bearing
100 Available Now | Further orders can be expected around Fri, Jul 31, 2026
$6.68 AUD
$6.68 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
8.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.315 in.)
Width (W)
3.000
mm
+ 0.000 / - 0.125
(Equiv. 0.118 in.)
Single Row Ball Bearings - 4x8x3 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    W2: 9.200 mm    N: 0.600 mm    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: SFMR84A-ZZ-MC3 (Each) Single Row Ball Bearings - 4x8x3 mm Flanged - Stainless Steel AISI 440C Bearing
100 Available Now | Further orders can be expected around Fri, Jul 31, 2026
$6.68 AUD
$6.68 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
O.D. (D)
8.000
mm
Width (W)
3.000
mm
W2
9.200
mm
N
0.600
mm
Single Row Ball Bearings - 4x8x3 mm - Stainless Steel AISI 440C - Ceramic Si3N4 Balls
Material: Stainless Steel AISI 440C - Ceramic Si3N4 Balls    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: SFMR84A-CSN-ZZS-ACO-ECO (Each) Single Row Ball Bearings - 4x8x3 mm Flanged - Stainless Steel AISI 440C - Ceramic Si3N4 Balls Bearing
1 Available Now | Further orders can be expected around Sat, Aug 08, 2026
$17.59 AUD
$44.58 AUD $17.59 AUD
Each
ID (d)
4.000
mm
O.D. (D)
8.000
mm
Width (W)
3.000
mm
Single Row Ball Bearings - 4x8x3 mm - Stainless Steel AISI 440C - Ceramic Si3N4 Balls
Material: Stainless Steel AISI 440C - Ceramic Si3N4 Balls    W2: 9.200 mm    N: 0.600 mm    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: SFMR84A-CSN-ZZS-ACO-ECO (Each) Single Row Ball Bearings - 4x8x3 mm Flanged - Stainless Steel AISI 440C - Ceramic Si3N4 Balls Bearing
1 Available Now | Further orders can be expected around Sat, Aug 08, 2026
$17.59 AUD
$44.58 AUD $17.59 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
8.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.315 in.)
Width (W)
3.000
mm
+ 0.000 / - 0.125
(Equiv. 0.118 in.)
W2
9.200
mm
N
0.600
mm
Single Row Ball Bearings - 4x8x3 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: FMR84A-ZZ-MC3 (PK-50) Single Row Ball Bearings - 4x8x3 mm Flanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Jul 31, 2026
$253.23 AUD
$568.26 AUD $253.23 AUD
Per 50
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
8.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.315 in.)
Width (W)
3.000
mm
+ 0.000 / - 0.125
(Equiv. 0.118 in.)
Single Row Ball Bearings - 4x8x3 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    W2: 9.200 mm    N: 0.600 mm    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: FMR84A-ZZ-MC3 (PK-50) Single Row Ball Bearings - 4x8x3 mm Flanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Jul 31, 2026
$253.23 AUD
$568.26 AUD $253.23 AUD
Per 50
View the product page first if you are unsure.
ID (d)
4.000
mm
O.D. (D)
8.000
mm
Width (W)
5.000
mm
Single Row Ball Bearings - 4x8x5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: MR84D-ZZS-ECO (Each) Single Row Ball Bearings - 4x8x5 mm Unflanged - Chrome Steel SAE 52100 Bearing
16 Available Now | Item Discontinued - Up to 16 may be ordered online. No backorders. Please contact us if you need a larger quantity
$8.00 AUD
$15.20 AUD $8.00 AUD
Each
ID (d)
4.000
mm
O.D. (D)
8.000
mm
Width (W)
5.000
mm
Single Row Ball Bearings - 4x8x5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: MR84D-ZZS-ECO (Each) Single Row Ball Bearings - 4x8x5 mm Unflanged - Chrome Steel SAE 52100 Bearing
16 Available Now | Item Discontinued - Up to 16 may be ordered online. No backorders. Please contact us if you need a larger quantity
$8.00 AUD
$15.20 AUD $8.00 AUD
Each
ID (d)
4.000
mm
O.D. (D)
8.000
mm
Width (W)
6.000
mm
W2
26000
mm
One Way Bearings - 4x8x6 mm - Chrome Steel
Material: Chrome Steel    Max RPM in Air: Drawn Cup Standard    Type: Steel   
Category: Bearings - One Way - Roller
Part Number: OW-0040-0080-0060-R (Each) One Way Bearings - 4x8x6 mm Roller - Chrome Steel Bearing
65 Available Now | Further orders can be expected around Sat, Jul 25, 2026
$15.41 AUD
$15.41 AUD
Each
ID (d)
4.000
mm
O.D. (D)
8.000
mm
Width (W)
6.000
mm
One Way Bearings - 4x8x6 mm - Chrome Steel
Material: Chrome Steel    W2: 26000 mm    Max RPM in Air: Drawn Cup Standard    Type: Steel   
Category: Bearings - One Way - Roller
Part Number: OW-0040-0080-0060-R (Each) One Way Bearings - 4x8x6 mm Roller - Chrome Steel Bearing
65 Available Now | Further orders can be expected around Sat, Jul 25, 2026
$15.41 AUD
$15.41 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
O.D. (D)
8.000
mm
Width (W)
8.000
mm
W1
176
mm
W2
137
mm
N
32000
mm
Needle Roller without Inner Ring Bearings - 4x8x8 mm / 176 mm - Chrome Steel Shell
Material: Chrome Steel    Max RPM in Air: 48000    Type: Polyamide   
Category: Bearings - Needle Roller without Inner Ring - Shell Type
Part Number: NSO-0040-0080-0080-TN (Each) Needle Roller without Inner Ring Bearings - 4x8x8 mm / 176 Kgf Shell Type - Chrome Steel Bearing
Out of Stock | Backorder Now | Orders can be expected around Wed, Jul 08, 2026
$6.95 AUD
$6.95 AUD
Each
ID (d)
4.000
mm
O.D. (D)
8.000
mm
Width (W)
8.000
mm
W1
176
mm
Needle Roller without Inner Ring Bearings - 4x8x8 mm / 176 mm - Chrome Steel Shell
Material: Chrome Steel    W2: 137 mm    N: 32000 mm    Max RPM in Air: 48000    Type: Polyamide   
Category: Bearings - Needle Roller without Inner Ring - Shell Type
Part Number: NSO-0040-0080-0080-TN (Each) Needle Roller without Inner Ring Bearings - 4x8x8 mm / 176 Kgf Shell Type - Chrome Steel Bearing
Out of Stock | Backorder Now | Orders can be expected around Wed, Jul 08, 2026
$6.95 AUD
$6.95 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
2.500
mm
+ 0.000 / - 0.125
(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x9x2.5 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684-MC3-AF12 (Each) Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Stainless Steel AISI 440C Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Jul 31, 2026
$5.77 AUD
$5.77 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
2.500
mm
+ 0.000 / - 0.125
(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x9x2.5 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684-MC3-AF12 (Each) Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Stainless Steel AISI 440C Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Jul 31, 2026
$5.77 AUD
$5.77 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.007
(Equiv. 0.354 in.)
Width (W)
2.500
mm
+ 0.000 / - 0.120
(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x9x2.5 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: P6   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684-MC3-JP6-AF12 (Each) Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Stainless Steel AISI 440C Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Aug 07, 2026
$22.68 AUD
$22.68 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.007
(Equiv. 0.354 in.)
Width (W)
2.500
mm
+ 0.000 / - 0.120
(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x9x2.5 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: P6   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684-MC3-JP6-AF12 (Each) Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Stainless Steel AISI 440C Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Aug 07, 2026
$22.68 AUD
$22.68 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
2.500
mm
+ 0.000 / - 0.125
(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x9x2.5 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684-MC3-R-AF12 (Each) Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Stainless Steel AISI 440C Bearing
95 Available Now | Further orders can be expected around Sat, Jul 25, 2026
$8.95 AUD
$8.95 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
2.500
mm
+ 0.000 / - 0.125
(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x9x2.5 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684-MC3-R-AF12 (Each) Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Stainless Steel AISI 440C Bearing
95 Available Now | Further orders can be expected around Sat, Jul 25, 2026
$8.95 AUD
$8.95 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
O.D. (D)
9.000
mm
Width (W)
2.500
mm
Single Row Ball Bearings - 4x9x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: 684-ZZS-ECO (Each) Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
19 Available Now | Further orders can be expected around Sat, Jul 25, 2026
$1.86 AUD
$1.86 AUD
Each
ID (d)
4.000
mm
O.D. (D)
9.000
mm
Width (W)
2.500
mm
Single Row Ball Bearings - 4x9x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: 684-ZZS-ECO (Each) Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
19 Available Now | Further orders can be expected around Sat, Jul 25, 2026
$1.86 AUD
$1.86 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
2.500
mm
+ 0.000 / - 0.125
(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x9x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: 684-MC3-AF12 (Each) Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
22 Available Now | More stock due: 200 around Wed, Jul 29, 2026 | Further orders can be expected around Fri, Jul 31, 2026
$3.68 AUD
$3.68 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
2.500
mm
+ 0.000 / - 0.125
(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x9x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: 684-MC3-AF12 (Each) Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
22 Available Now | More stock due: 200 around Wed, Jul 29, 2026 | Further orders can be expected around Fri, Jul 31, 2026
$3.68 AUD
$3.68 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
2.500
mm
+ 0.000 / - 0.125
(Equiv. 0.098 in.)
W2
10.300
mm
N
0.600
mm
Single Row Ball Bearings - 4x9x2.5 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: SF684-MC3-AF12 (Each) Single Row Ball Bearings - 4x9x2.5 mm Flanged - Stainless Steel AISI 440C Bearing
200 Available Now | Item Discontinued - Up to 200 may be ordered online. No backorders. Please contact us if you need a larger quantity
$2.59 AUD
$7.11 AUD $2.59 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
2.500
mm
+ 0.000 / - 0.125
(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x9x2.5 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    W2: 10.300 mm    N: 0.600 mm    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: SF684-MC3-AF12 (Each) Single Row Ball Bearings - 4x9x2.5 mm Flanged - Stainless Steel AISI 440C Bearing
200 Available Now | Item Discontinued - Up to 200 may be ordered online. No backorders. Please contact us if you need a larger quantity
$2.59 AUD
$7.11 AUD $2.59 AUD
Each
ID (d)
4.000
mm
O.D. (D)
9.000
mm
Width (W)
3.000
mm
Single Row Ball Bearings - 4x9x3 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: 684D-ZZS-ECO (Each) Single Row Ball Bearings - 4x9x3 mm Unflanged - Chrome Steel SAE 52100 Bearing
88 Available Now | Further orders can be expected around Sat, Jul 25, 2026
$3.59 AUD
$3.59 AUD
Each
ID (d)
4.000
mm
O.D. (D)
9.000
mm
Width (W)
3.000
mm
Single Row Ball Bearings - 4x9x3 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: 684D-ZZS-ECO (Each) Single Row Ball Bearings - 4x9x3 mm Unflanged - Chrome Steel SAE 52100 Bearing
88 Available Now | Further orders can be expected around Sat, Jul 25, 2026
$3.59 AUD
$3.59 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
3.500
mm
+ 0.000 / - 0.125
(Equiv. 0.138 in.)
Single Row Ball Bearings - 4x9x3.5 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684B-ZZ-MC3 (Each) Single Row Ball Bearings - 4x9x3.5 mm Unflanged - Stainless Steel AISI 440C Bearing
97 Available Now | Further orders can be expected around Fri, Jul 31, 2026
$4.50 AUD
$4.50 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
3.500
mm
+ 0.000 / - 0.125
(Equiv. 0.138 in.)
Single Row Ball Bearings - 4x9x3.5 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684B-ZZ-MC3 (Each) Single Row Ball Bearings - 4x9x3.5 mm Unflanged - Stainless Steel AISI 440C Bearing
97 Available Now | Further orders can be expected around Fri, Jul 31, 2026
$4.50 AUD
$4.50 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
3.500
mm
+ 0.000 / - 0.125
(Equiv. 0.138 in.)
Single Row Ball Bearings - 4x9x3.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: 684B-ZZ-MC3 (Each) Single Row Ball Bearings - 4x9x3.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
258 Available Now | Further orders can be expected around Fri, Jul 31, 2026
$4.95 AUD
$4.95 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
3.500
mm
+ 0.000 / - 0.125
(Equiv. 0.138 in.)
Single Row Ball Bearings - 4x9x3.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: 684B-ZZ-MC3 (Each) Single Row Ball Bearings - 4x9x3.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
258 Available Now | Further orders can be expected around Fri, Jul 31, 2026
$4.95 AUD
$4.95 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
3.500
mm
+ 0.000 / - 0.125
(Equiv. 0.138 in.)
W2
10.300
mm
N
0.600
mm
Single Row Ball Bearings - 4x9x3.5 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: SF684B-ZZ-MC3 (Each) Single Row Ball Bearings - 4x9x3.5 mm Flanged - Stainless Steel AISI 440C Bearing
73 Available Now | Item Discontinued - Up to 73 may be ordered online. No backorders. Please contact us if you need a larger quantity
$2.68 AUD
$7.33 AUD $2.68 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
3.500
mm
+ 0.000 / - 0.125
(Equiv. 0.138 in.)
Single Row Ball Bearings - 4x9x3.5 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    W2: 10.300 mm    N: 0.600 mm    Type: Abec 1   
Category: Bearings - Single Row Ball - Flanged
Part Number: SF684B-ZZ-MC3 (Each) Single Row Ball Bearings - 4x9x3.5 mm Flanged - Stainless Steel AISI 440C Bearing
73 Available Now | Item Discontinued - Up to 73 may be ordered online. No backorders. Please contact us if you need a larger quantity
$2.68 AUD
$7.33 AUD $2.68 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.004
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.005
(Equiv. 0.354 in.)
Width (W)
4.000
mm
+ 0.000 / - 0.040
(Equiv. 0.157 in.)
1051563 | S684A-ZZS-MC34-GR7-R-G48 (Each) --- Single Row Ball Bearings - 4x9x4 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Type: Abec 7   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684A-ZZS-MC34-GR7-R-G48 (Each) Single Row Ball Bearings - 4x9x4 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
2 Available Now | Further orders can be expected around Fri, Aug 07, 2026
$47.05 AUD
$47.05 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.004
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.005
(Equiv. 0.354 in.)
Width (W)
4.000
mm
+ 0.000 / - 0.040
(Equiv. 0.157 in.)
1051563 | S684A-ZZS-MC34-GR7-R-G48 (Each) --- Single Row Ball Bearings - 4x9x4 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Type: Abec 7   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684A-ZZS-MC34-GR7-R-G48 (Each) Single Row Ball Bearings - 4x9x4 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
2 Available Now | Further orders can be expected around Fri, Aug 07, 2026
$47.05 AUD
$47.05 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
O.D. (D)
9.000
mm
Width (W)
4.000
mm
Single Row Ball Bearings - 4x9x4 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684A-ZZS-ECO (Each) Single Row Ball Bearings - 4x9x4 mm Unflanged - Stainless Steel AISI 440C Bearing
90 Available Now | Further orders can be expected around Sat, Jul 25, 2026
$3.77 AUD
$3.77 AUD
Each
ID (d)
4.000
mm
O.D. (D)
9.000
mm
Width (W)
4.000
mm
Single Row Ball Bearings - 4x9x4 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Economy   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684A-ZZS-ECO (Each) Single Row Ball Bearings - 4x9x4 mm Unflanged - Stainless Steel AISI 440C Bearing
90 Available Now | Further orders can be expected around Sat, Jul 25, 2026
$3.77 AUD
$3.77 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
4.000
mm
+ 0.000 / - 0.125
(Equiv. 0.157 in.)
Single Row Ball Bearings - 4x9x4 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684A-ZZ-MC3 (Each) Single Row Ball Bearings - 4x9x4 mm Unflanged - Stainless Steel AISI 440C Bearing
150 Available Now | Further orders can be expected around Fri, Jul 31, 2026
$3.77 AUD
$3.77 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (W)
4.000
mm
+ 0.000 / - 0.125
(Equiv. 0.157 in.)
Single Row Ball Bearings - 4x9x4 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: Abec 1   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684A-ZZ-MC3 (Each) Single Row Ball Bearings - 4x9x4 mm Unflanged - Stainless Steel AISI 440C Bearing
150 Available Now | Further orders can be expected around Fri, Jul 31, 2026
$3.77 AUD
$3.77 AUD
Each
View the product page first if you are unsure.
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.007
(Equiv. 0.354 in.)
Width (W)
4.000
mm
+ 0.000 / - 0.120
(Equiv. 0.157 in.)
Single Row Ball Bearings - 4x9x4 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: P6   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684A-ZZ-MC3-JP6 (Each) Single Row Ball Bearings - 4x9x4 mm Unflanged - Stainless Steel AISI 440C Bearing
4 Available Now | Further orders can be expected around Fri, Jul 31, 2026
$4.86 AUD
$4.86 AUD
Each
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
O.D. (D)
9.000
mm
+ 0.000 / - 0.007
(Equiv. 0.354 in.)
Width (W)
4.000
mm
+ 0.000 / - 0.120
(Equiv. 0.157 in.)
Single Row Ball Bearings - 4x9x4 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Type: P6   
Category: Bearings - Single Row Ball - Unflanged
Part Number: S684A-ZZ-MC3-JP6 (Each) Single Row Ball Bearings - 4x9x4 mm Unflanged - Stainless Steel AISI 440C Bearing
4 Available Now | Further orders can be expected around Fri, Jul 31, 2026
$4.86 AUD
$4.86 AUD
Each
View the product page first if you are unsure.