Chain Gauges | McMaster-Carr

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30 Products

ANSI Roller Chain Wear-Indicating Rulers

Place this plastic ruler on links to measure chain wear.

	Overall
For Roller Chain Trade Size	Lg.	Wd.	Material		Each
For Single- and Double-Strand ANSI Roller Chain
40, 41, 50, 60, 80, 100, 120, 140, 160, 180, 200, 240, 40-2, 50-2, 60-2, 80-2, 100-2, 120-2, 140-2, 160-2, 180-2, 200-2, 240-2	15"	2 5/8"	Plastic	000000	00000

High-Accuracy Roller Chain Wear-Indicating Gauges

Precisely measure chain elongation to see if you need to replace your chain. These gauges give a more accurate reading than alternatives because they’re designed to anchor to a roller and extend across several links. A color indicator helps you quickly measure the space between rollers. If the gauge rests on top of the chain and you see green markings, your chain doesn't need to be replaced. If it slips between two rollers and you only see red markings, it’s time for a replacement.

Gauges

For Single-, Double-, and Triple-Strand ANSI Roller Chain
For Roller Chain Trade Size	Material		Each
35	Steel	0000000	0000000
40	Steel	0000000	000000
50	Steel	0000000	000000
60	Steel	0000000	000000
80	Steel	0000000	000000
100	Steel	0000000	000000
120	Steel	0000000	000000
140	Steel	0000000	000000
160	Steel	0000000	000000
180	Steel	0000000	000000
200	Steel	0000000	00000000
240	Steel	0000000	00000000
For Single-, Double-, and Triple-Strand ISO Roller Chain
06B	Steel	0000000	000000
08B	Steel	0000000	000000
10B	Steel	0000000	000000
12B	Steel	0000000	000000
16B	Steel	0000000	000000
20B	Steel	0000000	000000
24B	Steel	0000000	000000
28B	Steel	0000000	000000
32B	Steel	0000000	000000

Gauges with Plastic Case

For Single-, Double-, and Triple-Strand ANSI Roller Chain
No. of Gauges	For Roller Chain Trade Size	Material	Includes		Each
5	35, 40, 50, 60, 80	Steel	Chain Indentification Tool	0000000	000000000
For Single-, Double-, and Triple-Strand ISO Roller Chain
5	06B, 08B, 10B, 12B, 16B	Steel	Chain Indentification Tool	0000000	00000000

ANSI Roller Chain Wear-Indicating Inserts

Place these steel inserts between two roller links. If they can be inserted past your ANSI number, the chain is worn out.

	Overall
For Roller Chain Trade Size	Lg.	Wd.	Material		Each
For Single- and Double-Strand ANSI Roller Chain
35, 40, 41, 50, 60, 80, 100, 35-2, 40-2, 50-2, 60-2, 80-2, 100-2	8 3/4"	5/8"	Steel	000000	0000000
80, 100, 120, 140, 160, 180, 200, 240, 80-2, 100-2, 120-2, 140-2, 160-2, 180-2, 200-2, 240-2	18"	1 1/2"	Steel	000000	000000

Wear Gauges for Grade 80 and Grade 100 Chain

Gauge measures the maximum allowable wear tolerances on links of Grade 80 or Grade 100 steel chain, as required by OSHA. If the gauge can be inserted over any part of the link, the chain should be taken out of service.

For Grade 80 and Grade 100 Chain
For Straight-Link Chain Trade Size	For Manufacturer Model Number		Each
9/32, 3/8, 1/2, 5/8, 3/4, 7/8, 1	L8, L10	00000000	000000
9/32, 3/8, 1/2, 5/8, 3/4, 7/8, 1	P8, P10, H29, KWB	00000000	00000
For Grade 100 Chain
9/32, 3/8, 1/2, 5/8, 3/4, 7/8, 1	C10	0000000	00000
9/32, 3/8, 1/2, 5/8, 3/4, 7/8, 1	PW, PWA	00000000	00000