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#25 Roller Chain

#25 roller chain is a 1/4" pitch ANSI Standard roller chain designed for light-duty or space confined applications. It's the smallest size roller chain on the ANSI spectrum of roller chains but offers ample performance, strength, and durability for its small form factor. We supply 25 roller chain in a range of stock lengths including 10ft boxes, 50ft reels, 100ft reels, and 500ft reels right off the shelf! At USA Roller Chain we have the broadest selection of 25 chain on the market, from your standard carbon steel materials to stainless steel and even plastic materials. Notably 25 roller chain does not contain rollers, rather just bushings that come into contact with the sprocket.

#25 Chain Dimensions


Size	Pitch (P)	Bushing Width (W)	Bushing Diameter (D)	Overall Width (A)	Plate Height (H)	Plate Thickness (T)	Pin Diameter (E)	Weight (Per Ft)
Size	Pitch (P)	Bushing Width (W)	Bushing Diameter (D)	Overall Width (A)	Plate Height (H)	Plate Thickness (T)	Pin Diameter (E)	Weight (Per Ft)
25-1	0.25"	0.125"	0.130"	0.307"	0.232"	0.028"	0.091"	0.09 LBS
25-2	0.25"	0.125"	0.130"	0.567"	0.232"	0.028"	0.091"	0.17 LBS
25-3	0.25"	0.125"	0.130"	0.819"	0.232"	0.028"	0.091"	0.26 LBS
25-4	0.25"	0.125"	0.130"	1.071"	0.232"	0.028"	0.091"	0.35 LBS
25-5	0.25"	0.125"	0.130"	1.327"	0.232"	0.028"	0.091"	0.44 LBS

Note: additional information on product pages.

Standard ANSI 25 Roller Chains

Standard #25 roller chain includes the most commonly sold carbon-steel 25 chains. We offer these chains in all three of our quality levels and in standard stock length sizes (10ft, 50ft, 100ft, 250ft, and 500ft).


Size	Series	Tensile Strength	Working Load	Pitch (P)	Bushing Width (W)	Bushing Diameter (D)	Overall Width (A)	Plate Height (H)	Plate Thickness (T)	Pin Diameter (E)	Weight (LBS/ FT)
Size	Series	Tensile Strength	Working Load	Pitch (P)	Bushing Width (W)	Bushing Diameter (D)	Overall Width (A)	Plate Height (H)	Plate Thickness (T)	Pin Diameter (E)	Weight (LBS/ FT)
25-1	*Premier*	990 LBS	165 LBS	0.25"	0.125"	0.130"	0.307"	0.232"	0.028"	0.091"	0.09
25-1	*General Duty Plus*	900 LBS	--	0.25"	0.125"	0.130"	0.307"	0.232"	0.028"	0.091"	0.09
25-1	*Economy Plus*	900 LBS	--	0.25"	0.125"	0.130"	0.307"	0.232"	0.028"	0.091"	0.09
25-2	*Economy Plus*	1,700 LBS	--	0.25"	0.125"	0.130"	0.307"	0.232"	0.028"	0.091"	0.18
25-2	*Premier*	1,900 LBS	265 LBS	0.25"	0.125"	0.130"	0.307"	0.232"	0.028"	0.091"	0.18
25-3	*Premier*	2,970 LBS	396 LBS	0.25"	0.125"	0.130"	0.307"	0.232"	0.028"	0.091"	0.27

Heavy-Duty 25H Roller Chain

ANSI Heavy 25 roller chain utilizes thicker side-plates than standard for increased strength, shock load resistance, and longevity. These chains run on the same sprockets as a regular 25 roller chain.
25H Chain Dimensions:

Chain Size	Pitch (P)	Roller Width (W)	Bushing Diameter (D)	Overall Width (A)	Plate Height (H)	Plate Thickness (T)	Pin Diameter (E)	Weight (Per Ft)
Chain Size	Pitch (P)	Roller Width (W)	Bushing Diameter (D)	Overall Width (A)	Plate Height (H)	Plate Thickness (T)	Pin Diameter (E)	Weight (Per Ft)
*25H-1*	0.250"	0.125"	0.130"	0.354"	0.232"	0.039"	0.091"	0.12 LBS

Corrosion Resistant 25 Roller Chain

We offer a wide range of options for corrosion resistant (Ansi-Corrosive) 25 roller chain. The below chart shows the corrosion resistant options, if you need assistance making a decision please contact us and we will assist you.

Chain Size	Material	Pitch (P)	Roller Width (W)	Bushing Diameter (D)	Overall Width (A)	Plate Height (H)	Plate Thickness (T)	Pin Diameter (E)
Chain Size	Material	Pitch (P)	Roller Width (W)	Bushing Diameter (D)	Overall Width (A)	Plate Height (H)	Plate Thickness (T)	Pin Diameter (E)
*25SS-304*	304 Stainless Steel	0.250"	0.125"	0.130"	0.354"	0.232"	0.039"	0.091"
*25SS-316*	316 Stainless Steel	0.250"	0.125"	0.130"	0.354"	0.232"	0.039"	0.091"
*25NP*	Nickel Plates	0.250"	0.125"	0.130"	0.354"	0.232"	0.039"	0.091"
*25-COAT*	Dacromet Coated	0.250"	0.125"	0.130"	0.354"	0.232"	0.039"	0.091"
*25PS*	Poly Steel	0.250"	0.125"	0.130"	0.354"	0.232"	0.039"	0.091"
*25AC*	Acetal	0.250"	0.125"	0.130"	0.349"	0.250"	0.040"	0.105"
*25D*	Delrin	0.250"	0.125"	0.130"	0.349"	0.250"	0.040"	0.105"
*25KY*	Kynar	0.250"	0.125"	0.130"	0.349"	0.250"	0.040"	0.105"
*25NY*	Nylatron	0.250"	0.125"	0.130"	0.349"	0.250"	0.040"	0.105"
*25PP*	Polypropylene	0.250"	0.125"	0.130"	0.349"	0.250"	0.040"	0.105"

25 Roller Chain Sprockets

#25 A-Plate Sprockets

Sprocket Size	Tooth Count	Type	Outside Diameter	Stock Bore	Weight (LBS)
Sprocket Size	Tooth Count	Type	Outside Diameter	Stock Bore	Weight (LBS)
25A18	18	A	1.568"	1/4	0.04
25A19	19	A	1.648"	1/4	0.04
25A20	20	A	1.729"	1/4	0.04
25A21	21	A	1.809"	3/8	0.04
25A22	22	A	1.889"	3/8	0.06
25A23	23	A	1.969"	3/8	0.06
25A24	24	A	2.049"	3/8	0.08
25A25	25	A	2.129"	3/8	0.08
25A26	26	A	2.209"	3/8	0.09
25A28	28	A	2.369"	3/8	0.10
25A30	30	A	2.529"	3/8	0.12
25A32	32	A	2.688"	3/8	0.14
25A35	35	A	--	3/8	0.16
25A36	36	A	3.008"	3/8	0.18
25A40	40	A	3.327"	1/2	0.20
25A42	42	A	--	1/2	0.24
25A45	45	A	3.725"	1/2	0.25
25A48	48	A	3.964"	1/2	0.32
25A54	54	A	4.442"	1/2	0.38
25A60	60	A	4.920"	1/2	0.54
25A72	72	A	5.876"	1/2	0.74

#25 B-Hub Sprockets

Sprocket Size	Tooth Count	Type	Outside Diameter	Stock Bore	Recommend Max. Bore	Hub Diameter	Length Thru Bore	Weight (LBS)
Sprocket Size	Tooth Count	Type	Outside Diameter	Stock Bore	Recommend Max. Bore	Hub Diameter	Length Thru Bore	Weight (LBS)
25B9	9	B	0.837"	1/4	1/4	7/16	1/2	0.03
25B10	10	B	0.919"	1/4	1/4	1/2	1/2	0.03
25B11	11	B	1.002"	1/4	5/16	9/16	1/2	0.04
25B12	12	B	1.083"	1/4	3/8	5/8	1/2	0.06
25B13	13	B	1.167"	1/4	7/16	23/32	1/2	0.07
25B14	14	B	1.246"	1/4	9/16	13/16	1/2	0.08
25B15	15	B	1.326"	1/4	9/16	57/64	1/2	0.10
25B16	16	B	1.407"	1/4	9/16	31/32	1/2	0.12
25B17	17	B	1.487"	1/4	5/8	1-1/32	1/2	0.14
25B18	18	B	1.568"	1/4	3/4	1-1/8	1/2	0.16
25B19	19	B	1.648"	1/4	13/16	1-7/32	1/2	0.19
25B20	20	B	1.729"	1/4	7/8	1-9/32	5/8	0.25
25B21	21	B	1.809"	1/4	7/8	1-3/8	5/8	0.28
25B22	22	B	1.889"	1/4	15/16	1-7/16	5/8	0.31
25B23	23	B	1.969"	1/4	1	1-1/2	5/8	0.32
25B24	24	B	2.049"	3/8	1	1-1/2	5/8	0.33
25B25	25	B	2.129"	3/8	1	1-1/2	5/8	0.34
25B26	26	B	2.209"	3/8	1	1-1/2	5/8	0.35
25B28	28	B	2.369"	3/8	1	1-1/2	5/8	0.36
25B30	30	B	2.529"	3/8	1	1-1/2	5/8	0.38
25B32	32	B	2.688"	3/8	1	1-1/2	5/8	0.40
25B36	36	B	3.008"	3/8	1	1-1/2	3/4	0.50
25B40	40	B	3.327"	1/2	1-3/8	2	3/4	0.53
25B45	45	B	3.725"	1/2	1-3/8	2	3/4	0.56
25B48	48	B	3.964"	1/2	1-3/8	2	3/4	0.56
25B54	54	B	4.442"	1/2	1-3/8	2	3/4	1.00
25B60	60	B	4.920"	1/2	1-3/8	2	3/4	1.10
25B70	70	B	5.717"	1/2	1-3/8	2	3/4	1.25
25B72	72	B	5.876"	1/2	1-3/8	2	3/4	1.30