India has broad use of V-belt transmission in agricultural equipment, pumps, textile machinery, stone processing, building materials and general manufacturing. Replacement enquiries often combine a standard pulley family with a shaft bore that must match existing equipment.
For MRO work, a clear photo of the old pulley plus belt marking, shaft diameter, groove count and measured diameter is more reliable than asking for “the same size”. For new equipment, include motor power/speed and the required driven speed.
Industries and buyer priorities in India
| Industry | Typical belt-drive context | RFQ emphasis |
|---|---|---|
| Agricultural machinery | Tractors, threshers and irrigation pumps | Replaceability, larger bores, outdoor service |
| Textile machinery | Spinning, weaving and winding | Multi-groove high-speed drives |
| Pumps & water treatment | Centrifugal and deep-well pump drives | 3–4 grooves, varied shaft bores |
| Stone & mining machinery | Cutters and crusher auxiliaries | Heavy-duty wear conditions |
| Cement & building materials | Mills and mixers | Large-diameter multi-groove drives |
| Automotive parts manufacturing | Machine-tool auxiliaries | Repeatable fit for production equipment |
| Generator auxiliaries | Small and medium generating equipment | Common industrial pulley sizes |
Terminology and standards context
State SPA/SPZ/SPB/SPC explicitly where the existing equipment uses a European narrow-belt profile. For replacement imports, send both metric shaft data and the old marking to reduce ambiguity.
Replacement workflow
1. Confirm the belt section
Read the marking on the existing belt or machine drawing. SPA, SPZ, SPB and SPC use different groove geometries.
2. Confirm the required ratio
Use the pitch/datum diameters, not the outside diameters, when checking driver and driven speed.
3. Choose the groove count
The groove count affects power capacity, axial width and the number of matched belts in the drive.
4. Match the shaft interface
Check shaft diameter, keyway and the recommended taper-bush designation for the exact row.
5. Check the machine envelope
Compare outside diameter and axial dimensions with the guard, bearings and adjacent components.
6. Record the RFQ details
Send the model or measurements, speeds, shaft, application and any drawing/replacement reference.
Documentation to prepare before enquiry
Prepare a dimensional RFQ
Send the model or measurements, shaft diameter, speed data, application, quantity and destination to [email protected].