Illustrative drawing. Actual product is confirmed to your specification at quotation.
Couplings
Chain Couplings
A chain coupling joins two sprocket hubs with a double roller chain, often in a cover. It carries good torque in a compact size and the chain is easy to replace without moving the machines. Best for moderate speeds.
- Compact, high torque
- Chain replaced without moving shafts
- Covers hold grease
Specifications
- Material
- Steel
- Type
- Double chain
- Size / section / duty
- Light dutyMedium dutyHeavy duty
- Standards
- ANSI B29.1
Exact sizes, brands and availability are confirmed at quotation. Send the code or a photo of the old part.
Applications
- Conveyors and mixers
- Pumps and compressors at moderate speed
- Machines needing quick coupling service
- Agricultural and general machinery
Technical reference
Choosing a coupling type
| Coupling | Torsionally flexible | Handles misalignment | Typical use |
|---|---|---|---|
| Jaw (spider) | Yes | Moderate | Motors to pumps, small conveyors, compressors |
| Pin and bush | Yes | Moderate | Pumps, fans, general machinery |
| Tyre | Yes | High | Crushers, mills, shock-loaded drives |
| Grid | Yes | Moderate | Conveyors, mixers, heavy shock loads |
| Gear | No | Angular, high torque | Steel mills, cement kilns, heavy drives |
| Chain | Limited | Small | Medium-speed drives with easy chain replacement |
| Disc | No | Angular | High-speed, precise drives, compressors |
| Fluid | Yes | Moderate | Soft starting of conveyors and crushers |
| Rigid sleeve / flange | No | None (shafts must be aligned) | Aligned shafts, vertical pumps |
General guidance. Final selection depends on torque, speed, shaft sizes, misalignment and service factor.
ANSI roller chain dimensions (ANSI B29.1 / ASME)
| ANSI No. | Pitch (in) | Pitch (mm) | Roller diameter (mm) | Inner width (mm) |
|---|---|---|---|---|
| 25 | 1/4 | 6.35 | 3.30 | 3.18 |
| 35 | 3/8 | 9.525 | 5.08 | 4.77 |
| 40 | 1/2 | 12.7 | 7.92 | 7.85 |
| 50 | 5/8 | 15.875 | 10.16 | 9.40 |
| 60 | 3/4 | 19.05 | 11.91 | 12.57 |
| 80 | 1 | 25.4 | 15.88 | 15.75 |
| 100 | 1 1/4 | 31.75 | 19.05 | 18.90 |
| 120 | 1 1/2 | 38.1 | 22.23 | 25.22 |
| 140 | 1 3/4 | 44.45 | 25.40 | 25.22 |
| 160 | 2 | 50.8 | 28.58 | 31.55 |
Single-strand dimensions. Multi-strand chains have the same pitch with a strand spacing. Tensile strength varies by maker and is confirmed at quotation.
Related and matching products
Request a quote for Chain Couplings
Give us the code, size, brand and quantity, or a photo of the old part. We reply within one business day.
Common questions
- Which sizes of chain couplings do you supply?
- We supply chain couplings across the size range (Light duty, Medium duty, Heavy duty). Send the code, dimensions or a photo of the old part and we confirm the match, availability and lead time at quotation.
- Which standards apply to chain couplings?
- Common standards are ANSI B29.1. Tell us the standard you need and we will quote to it.
- Which brands can you supply?
- We supply Fenner, PIX and equivalent brands, and can quote alternatives where the application allows. Tell us your preferred brand and we confirm what is available.
- Can you supply in bulk or ship Pan India?
- Yes. We quote for single pieces and scheduled bulk supply, and ship Pan India. Confirm the quantity when you request a quote.
Need a quote on bulk or custom industrial supply?
Share your specifications and quantities — our technical team will respond with pricing and lead time within one business day.