Balls - Checking - Stainless Steel - Standard

Balls -> Checking -> Stainless Steel -> Standard

There is only 1 product in the sub-categories of Balls - Checking - Stainless Steel - Standard. Browse the Balls - Checking - Stainless Steel - Standard products table.

Category Details

A selection of Standard Stainless Steel Checking Balls. 440C Hardened to RC 55-58.

  • Checking balls are precision balls used in various applications for dimensional checking, calibration, and verification of sizes and dimensions.
  • These balls are typically made of high-quality materials with tight tolerances to ensure accurate measurements.
  • Checking balls are often used in coordinate measuring machines (CMM) and other metrology equipment to verify the accuracy of machined parts and components.
  • Ball and shank are concentric within 5 microns (0.0002 in.) TIR.
  • Weld between ball and shank is designed so the ball will fall off if subject to unusually heavy lateral force, preventing set up and inspection errors that may occur because of a bent shaft.

Small Parts & Bearings

Additional resources:


A more comprehensive listing may be found in the Balls - Checking - Stainless Steel - Standard category on the MBA Minibearings main store.
Diameter (A) Shank Diameter (D) Base to Centre (B) Shoulder to Centre (C) Indicative
Image
Checking Balls - 3.175x3.188x9.525 mm - Stainless Steel Ball
Diameter (A)
3.175
mm
+/- 0.0051
(Equiv. 0.125 in.)
Shank Diameter (D)
3.188
mm
+/- 0.0051
(Equiv. 0.126 in.)
Base to Centre (B)
9.525
mm
+/- 0.1270
(Equiv. 0.375 in.)
Shoulder to Centre (C)
2.383
mm
+/- 0.0051
Checking Balls - 3.175x3.188x9.525 mm - Stainless Steel
Material: Stainless Steel   
Part Number: BCHK-00318-S440 (Each)
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 20, 2026
$252.23 AUD
$252.23 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Diameter (A) Shank Diameter (D) Base to Centre (B) Shoulder to Centre (C) Indicative
Image
Checking Balls - 3.175x3.188x9.525 mm - Stainless Steel Ball
Diameter (A)
3.175
mm
+/- 0.0051
(Equiv. 0.125 in.)
Shank Diameter (D)
3.188
mm
+/- 0.0051
(Equiv. 0.126 in.)
Base to Centre (B)
9.525
mm
+/- 0.1270
(Equiv. 0.375 in.)
Shoulder to Centre (C)
2.383
mm
+/- 0.0051
Checking Balls - 3.175x3.188x9.525 mm - Stainless Steel
Material: Stainless Steel   
Part Number: BCHK-00318-S440 (Each)
Out of Stock | Backorder Now | Orders can be expected around Tue, Jan 20, 2026
$252.23 AUD
$252.23 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.