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#25 Roller Chain
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#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) |
|---|---|---|---|---|---|---|---|---|
| 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 |
25 Chain Catalog
Browse #25 chain by category or specific type below.
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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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
The ANSI Heavy 25 roller chain employs thicker side plates than the standard version, enhancing strength, shock load resistance, and longevity. These chains are compatible with the same sprockets as regular 25 roller chains.
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)
|
|---|---|---|---|---|---|---|---|---|
| 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 broad range of options for corrosion-resistant (anti-corrosive) 25 roller chain. The chart below illustrates the corrosion-resistant choices. If you need assistance in making a decision, please contact us, and we will be happy to help.
| 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) |
|---|---|---|---|---|---|
| 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) |
|---|---|---|---|---|---|---|---|---|
| 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 |
How to Order #25 Roller Chain
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