Collection: Balls - Checking - Tungsten Carbide

Balls -> Checking -> Tungsten Carbide

There are 4 products in the sub-categories of Balls - Checking - Tungsten Carbide. Browse the Balls - Checking - Tungsten Carbide products table.

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Category Details

A selection of Tungsten Carbide Checking Balls. Tungsten Carbide RC 65-68

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.

Miniature Bearings Australia - MBA Minibearings

Additional resources:

Balls Master Catalogue PDF

A more concise listing may be found in the Balls - Checking - Tungsten Carbide category on the Small Parts & Bearings online store.

Diameter (A)	Shank Diameter (D)	Base to Centre (B)	Shoulder to Centre (C)	Indicative Image
Diameter (A) 6.350 mm _{+/- 0.0051} (Equiv. 0.25 in.)	Shank Diameter (D) 3.167 mm _{+/- 0.0051} (Equiv. 0.125 in.)	Base to Centre (B) 14.224 mm _{+/- 0.1270} (Equiv. 0.56 in.)	Shoulder to Centre (C) 5.080 mm +/- 0.0051
Material: Tungsten Carbide
Part Number: BCHK-00635-TC Checking Balls - 6.35x3.167x14.224 mm - Tungsten Carbide Ball Out of Stock \| Backorder Now \| Orders can be expected around Mon, Oct 06, 2025 Regular price $259.14 AUD Regular price Sale price $259.14 AUD Unit price per Excludes GST and overseas Taxes & Duties Each Quantity Required Backorder: Out of Stock.
Diameter (A)	Shank Diameter (D)	Base to Centre (B)	Shoulder to Centre (C)	Indicative Image
Diameter (A) 6.350 mm _{+/- 0.0051} (Equiv. 0.25 in.)	Shank Diameter (D) 3.167 mm _{+/- 0.0051} (Equiv. 0.125 in.)	Base to Centre (B) 14.224 mm _{+/- 0.1270} (Equiv. 0.56 in.)	Shoulder to Centre (C) 5.080 mm +/- 0.0051
Material: Tungsten Carbide
Part Number: BCHK-00635-TC Checking Balls - 6.35x3.167x14.224 mm - Tungsten Carbide Ball Out of Stock \| Backorder Now \| Orders can be expected around Mon, Oct 06, 2025 Regular price $259.14 AUD Regular price Sale price $259.14 AUD Unit price per Excludes GST and overseas Taxes & Duties Each Quantity Required Backorder: Out of Stock.
BCHK-00635-TC --- Checking Balls - 6.35x3.167x14.224 mm - Tungsten Carbide Ball BCHK-00635-TC --- Checking Balls - 6.35x3.167x14.224 mm - Tungsten Carbide Ball Regular price $259.14 AUD Regular price Sale price $259.14 AUD Unit price per Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now
Diameter (A) 9.525 mm _{+/- 0.0051} (Equiv. 0.375 in.)	Shank Diameter (D) 4.755 mm _{+/- 0.0051} (Equiv. 0.187 in.)	Base to Centre (B) 19.050 mm _{+/- 0.1270} (Equiv. 0.75 in.)	Shoulder to Centre (C) 7.620 mm +/- 0.0051
Material: Tungsten Carbide
Part Number: BCHK-00953-TC Checking Balls - 9.525x4.755x19.05 mm - Tungsten Carbide Ball Out of Stock \| Backorder Now \| Orders can be expected around Mon, Oct 06, 2025 Regular price $296.23 AUD Regular price Sale price $296.23 AUD Unit price per Excludes GST and overseas Taxes & Duties Each Quantity Required Backorder: Out of Stock.
Diameter (A) 9.525 mm _{+/- 0.0051} (Equiv. 0.375 in.)	Shank Diameter (D) 4.755 mm _{+/- 0.0051} (Equiv. 0.187 in.)	Base to Centre (B) 19.050 mm _{+/- 0.1270} (Equiv. 0.75 in.)	Shoulder to Centre (C) 7.620 mm +/- 0.0051
Material: Tungsten Carbide
Part Number: BCHK-00953-TC Checking Balls - 9.525x4.755x19.05 mm - Tungsten Carbide Ball Out of Stock \| Backorder Now \| Orders can be expected around Mon, Oct 06, 2025 Regular price $296.23 AUD Regular price Sale price $296.23 AUD Unit price per Excludes GST and overseas Taxes & Duties Each Quantity Required Backorder: Out of Stock.
BCHK-00953-TC --- Checking Balls - 9.525x4.755x19.05 mm - Tungsten Carbide Ball BCHK-00953-TC --- Checking Balls - 9.525x4.755x19.05 mm - Tungsten Carbide Ball Regular price $296.23 AUD Regular price Sale price $296.23 AUD Unit price per Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now
Diameter (A) 12.700 mm _{+/- 0.0051} (Equiv. 0.5 in.)	Shank Diameter (D) 6.342 mm _{+/- 0.0051} (Equiv. 0.25 in.)	Base to Centre (B) 23.876 mm _{+/- 0.1270} (Equiv. 0.94 in.)	Shoulder to Centre (C) 10.160 mm +/- 0.0051
Material: Tungsten Carbide
Part Number: BCHK-01270-TC Checking Balls - 12.7x6.342x23.876 mm - Tungsten Carbide Ball Out of Stock \| Backorder Now \| Orders can be expected around Mon, Oct 06, 2025 Regular price $279.77 AUD Regular price Sale price $279.77 AUD Unit price per Excludes GST and overseas Taxes & Duties Each Quantity Required Backorder: Out of Stock.
Diameter (A) 12.700 mm _{+/- 0.0051} (Equiv. 0.5 in.)	Shank Diameter (D) 6.342 mm _{+/- 0.0051} (Equiv. 0.25 in.)	Base to Centre (B) 23.876 mm _{+/- 0.1270} (Equiv. 0.94 in.)	Shoulder to Centre (C) 10.160 mm +/- 0.0051
Material: Tungsten Carbide
Part Number: BCHK-01270-TC Checking Balls - 12.7x6.342x23.876 mm - Tungsten Carbide Ball Out of Stock \| Backorder Now \| Orders can be expected around Mon, Oct 06, 2025 Regular price $279.77 AUD Regular price Sale price $279.77 AUD Unit price per Excludes GST and overseas Taxes & Duties Each Quantity Required Backorder: Out of Stock.
BCHK-01270-TC --- Checking Balls - 12.7x6.342x23.876 mm - Tungsten Carbide Ball BCHK-01270-TC --- Checking Balls - 12.7x6.342x23.876 mm - Tungsten Carbide Ball Regular price $279.77 AUD Regular price Sale price $279.77 AUD Unit price per Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now
Diameter (A) 19.050 mm _{+/- 0.0127} (Equiv. 0.75 in.)	Shank Diameter (D) 9.517 mm _{+/- 0.0051} (Equiv. 0.375 in.)	Base to Centre (B) 31.750 mm _{+/- 0.1270} (Equiv. 1.25 in.)	Shoulder to Centre (C) 12.700 mm +/- 0.0051
Material: Tungsten Carbide
Part Number: BCHK-01905-TC Checking Balls - 19.05x9.517x31.75 mm - Tungsten Carbide Ball Contact Us \| Special Order Only - Please contact us if you need a large quantity
Diameter (A) 19.050 mm _{+/- 0.0127} (Equiv. 0.75 in.)	Shank Diameter (D) 9.517 mm _{+/- 0.0051} (Equiv. 0.375 in.)	Base to Centre (B) 31.750 mm _{+/- 0.1270} (Equiv. 1.25 in.)	Shoulder to Centre (C) 12.700 mm +/- 0.0051
Material: Tungsten Carbide
Part Number: BCHK-01905-TC Checking Balls - 19.05x9.517x31.75 mm - Tungsten Carbide Ball Contact Us \| Special Order Only - Please contact us if you need a large quantity \| Orders can be expected around Thu, Jun 08, 2028