Accusize / Measurement & Inspection

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52-Piece Precision Chrome Steel Gage Ball Set, 1/8"–1", 3600-5100

Product No. 3600-5100

Twenty-six pairs of ground and lapped chrome steel balls, ready for dimensional checks, comparative measurements and tooling setups.

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Accusize 3600-5100 chrome steel gage ball set in an open grey case with red fitted insert, paired balls and an inch-size chart inside the lid.
Product image from the Accusize 2027–2028 catalogue.
52Precision balls
26Same-size pairs
1/8–1 in.Diameter range
HRC 63Manufacturer-stated hardness

Designed for the inspection bench

Spherical contact. Practical measurement.

01

Ground and lapped

Chrome steel balls provide spherical contact for dimensional inspection.

02

Pairs for setup work

Two balls of each nominal size support comparative measurements and paired-contact setups.

03

Organised for the bench

A fitted case and red insert organise the set. The included extraction tool helps remove balls from their storage positions.

Applications

Six ways to use a precision ball.

Rendered application studies illustrate the measuring principle. Cutaways expose contact geometry; tools and workpieces are not included.

Micrometer measuring faces — rendered application study
01

Micrometer measuring faces

Compare readings at selected positions on the measuring faces.

Curved-wall thickness — rendered application study
02

Curved-wall thickness

Use a ball to contact the curved inside surface of a part with a flat outside reference.

Centre-drill depth — rendered application study
03

Centre-drill depth

Seat a ball in the centre hole to compare its axial position to a datum.

Seat depth — rendered application study
04

Seat depth

Compare a seated ball’s protrusion or depth relative to a reference face.

Collet setup — rendered application study
05

Collet setup

Ball spacers can support a collet-boring setup using a suitable retention method.

Tapered bores — rendered application study
06

Tapered bores

Compare the seating positions of two known ball diameters to evaluate taper geometry.

Technical reference

Specifications

Pieces
52
Pairs
26
Diameter range
1/8–1 in.
Material
Chrome steel
Finish
Ground and lapped
Hardness
HRC 63 (manufacturer stated)
Accuracy grade
Grade 24 / ISO 3290 (manufacturer stated)
Storage
Fitted carrying case
Dimensional tolerance
0.0001 in. (catalogue stated)
Sphericity
Within 0.000025 in.
Surface finish
1.5 µin. (inch set)
Included document
Certificate of Conformity

Inside the set

52 precision chrome steel gage balls in 26 same-size pairs, a fitted carrying case, a ball extraction tool and a Certificate of Conformity.

Included diameters (in.)

Two balls of each diameter:

1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2, 17/32, 9/16, 19/32, 5/8, 21/32, 11/16, 23/32, 3/4, 13/16, 7/8, 15/16 and 1.

Specifications follow the Accusize 2027–2028 catalogue. Grade 24 (ISO 3290) is manufacturer stated. This product is the 52-piece inch set; the metric set is sold separately as 3600-5200.

Preview of the Accusize 2027–2028 catalogue sheet showing gage ball set specifications, sizes and six application diagrams.

2027–2028 catalogue

Keep the specifications at hand.

View or save the product sheet with specifications, the complete size lists and six application diagrams. Select the 3600-5100 inch-set row for this product.

Open catalogue sheet (PDF)

Product images

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Technical resources

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