25.40 mm Pitch Sprockets

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	System of Measurement System of Measurement

Metric

	For Shaft Diameter For Shaft Diameter

16mm

20mm

25mm

	Number of Teeth Number of Teeth

	Roller Chain Trade Size Roller Chain Trade Size

16B

16B-2

16B-SS

	For Roller Chain Strand Type For Roller Chain Strand Type

	Single

	Bore Type Bore Type


Finished	Machinable

	Pitch Pitch	Show

25.40 mm

	Pitch Pitch	Hide

	ID ID

16mm

20mm

25mm

	OD OD

	For Shaft Type For Shaft Type

	Round

	Roller Chain Standard Roller Chain Standard

ISO

	Material Material

Steel

Stainless Steel

	For Maximum Shaft Diameter For Maximum Shaft Diameter

	Hub Diameter Hub Diameter

	Sprocket Type Sprocket Type

Standard

Idler

	Overall Width Overall Width

18 mm

40mm

45 mm

	Bearing Type Bearing Type

	Ball

	Specifications Met Specifications Met

ISO

DIN

	Shaft Mount Type Shaft Mount Type

Press Fit

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Bearing Seal Type Bearing Seal Type

Double Sealed

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17 Products

About Roller Chain and Sprockets

Designed to meet ISO 606 and DIN 8187 international dimensional standards, these sprockets are for use with compatible ISO and DIN roller chain. They come machined to the shaft diameter size listed and are machinable up to the maximum shaft diameter size.

For technical drawings and 3-D models, click on a part number.

For ISO 16B Roller Chain (25.4 mm Pitch)
Number of Teeth	For Shaft Dia., mm	For Max. Shaft Dia., mm	OD, mm	Overall Wd., mm	Hub Dia., mm	Material	Specifications Met		Each
12	16	47	114.01	40	72	Steel	DIN 8187, ISO 606	00000000	000000
15	16	62	138.04	40	96	Steel	DIN 8187, ISO 606	00000000	000000
17	25	67	154.11	45	102	Steel	DIN 8187, ISO 606	00000000	000000
20	25	70	178.24	45	108	Steel	DIN 8187, ISO 606	00000000	000000

Idler Sprockets for Metric Roller Chain

Keep constant tension on your drive with these sprockets that press against your metric ISO roller chain to take up slack and reduce wear and vibration. They rotate freely on built-in ball bearings, which are double sealed to keep dirt out, and are for use with roller chain tensioners. All come with a finished bore that fits directly onto your shaft—no need for machining. These sprockets meet ISO 606, which is an international standard for dimensions and materials.

For technical drawings and 3-D models, click on a part number.

						Bearing
Number of Teeth	For Shaft Dia., mm	OD, mm	Overall Wd., mm	Hub Dia., mm	Material	Type	Material	Specifications Met		Each
For ISO 16B Roller Chain (25.4 mm Pitch)
12	20	109	18	47	Steel	Ball	Steel	ISO 606	000000	000000

Metric Roller Chain and Links

This chain conforms to ISO 606B and is compatible with BS 228 (British standard) and DIN 8187 (German standard).

Connecting links are also known as master links. They're used to join the ends of a chain length. The side plate is easy to remove for attaching to a chain. Adding-and-connecting links are also known as half links and offset links. They can join chain that requires an odd number of links. For trade size 06B and up, the side plate is easy to remove for attaching them to chain.

For technical drawings and 3-D models, click on a part number.

Single Strand

Chain

Connecting Link

Adding-and-Connecting Link

Chain

	Pitch
Roller Chain Trade No.	mm	in.	Roller Dia., mm	Roller Wd., mm	Working Load, lbs.	Lengths, ft.		Per Ft.
Steel
16B	25.40	1.000"	15.88	17.02	3,600	1-20, 50, 100	0000000	000000

Connecting Links

	Pitch
Roller Chain Trade No.	mm	in.	Roller Dia., mm	Roller Wd., mm	Working Load, lbs.		Each
Steel
16B	25.40	1.000"	15.88	17.02	3,600	0000000	00000

Adding-and-Connecting Links

	Pitch
Roller Chain Trade No.	mm	in.	Roller Dia., mm	Roller Wd., mm	Working Load, lbs.		Each
Steel
16B	25.40	1.000"	15.88	17.02	3,600	0000000	00000

Corrosion-Resistant Metric Roller Chain and Links

Chain

Connecting Link

Adding-and-Connecting Link

Made of stainless steel, this chain has excellent corrosion resistance. It conforms to ISO 606B and is compatible with BS 228 (British standard) and DIN 8187 (German standard).

For technical drawings and 3-D models, click on a part number.

	Pitch					Chain			Connecting Links		Adding-and-Connecting Links
Roller Chain Trade No.	mm	in.	Roller Dia., mm	Roller Wd., mm	Working Load, lbs.	Length, ft.		Per Ft.		Each		Each
Single Strand
18-8 Stainless Steel
16B-SS	25.40	1.000"	15.88	17.02	460	1-20, 50, 100	00000000	000000	00000000	000000	00000000	000000

High-Strength Corrosion-Resistant Metric Roller Chain and Links

This treated steel chain has over seven times the capacity of stainless steel chain. It conforms to ISO 606B and is compatible with BS 228 (British standard) and DIN 8187 (German standard).

Connecting links are also known as master links. They're used to join the ends of a chain length. The side plate is easy to remove for attaching to a chain. Adding-and-connecting links are also known as half links and offset links. They can join chain that requires an odd number of links. The side plate is easy to remove for attaching to chain.

For technical drawings and 3-D models, click on a part number.

Single Strand

Chain

Connecting Link

Adding-and-Connecting Link

Chain

	Pitch
Roller Chain Trade No.	mm	in.	Roller Dia., mm	Roller Wd., mm	Working Load, lbs.	Length, ft.		Per Ft.
Corrosion-Resistant-Coated Steel
16B	25.40	1.000"	15.88	17.02	3,600	1-20, 50, 100	000000	000000

Connecting Links

	Pitch
Roller Chain Trade No.	mm	in.	Roller Dia., mm	Roller Wd., mm	Working Load, lbs.		Each
Corrosion-Resistant-Coated Steel
16B	25.40	1.000"	15.88	17.02	3,600	00000000	00000

Adding-and-Connecting Links

	Pitch
Roller Chain Trade No.	mm	in.	Roller Dia., mm	Roller Wd., mm	Working Load, lbs.		Each
Corrosion-Resistant-Coated Steel
16B	25.40	1.000"	15.88	17.02	3,600	00000000	000000

Double Strand

Chain

Connecting Link

Adding-and-Connecting Link

Chain

	Pitch
Roller Chain Trade No.	mm	in.	Roller Dia., mm	Roller Wd., mm	Working Load, lbs.	Length, ft.		Per Ft.
Corrosion-Resistant-Coated Steel
16B-2	25.40	1.000"	15.88	17.02	4,800	1-20, 50, 100	000000	000000

Connecting Links

	Pitch
Roller Chain Trade No.	mm	in.	Roller Dia., mm	Roller Wd., mm	Working Load, lbs.		Each
Corrosion-Resistant-Coated Steel
16B-2	25.40	1.000"	15.88	17.02	4,800	00000000	000000

Adding-and-Connecting Links

	Pitch
Roller Chain Trade No.	mm	in.	Roller Dia., mm	Roller Wd., mm	Working Load, lbs.		Each
Corrosion-Resistant-Coated Steel
16B-2	25.40	1.000"	15.88	17.02	4,800	00000000	000000