SPA 630 x 3 Groove Taper Lock Pulley - 3020 Bush
- SPA
- 3 grooves
- 630mm pitch diameter
- 3020 bush
SPA 630 x 3 Groove Taper Lock Pulley - 3020 Bush is backordered and will ship as soon as it is back in stock.
Measuring Your Belt
Measuring Your Belt
Check the markings first. Most belts have their size printed on the back, for example A24, SPZ1000 or 8PK1200. Type that code into the search bar to find the exact match.
Markings worn off? Measure across the top of the belt for the width, and its depth. For the length, wrap a piece of string round the belt, mark where it meets, then lay the string flat and measure it.
Timing or ribbed belt? Count the teeth or ribs, and measure the gap between them.
Full step-by-step guide: How to measure your belt →
Still not sure? Call 020 8138 2848 and we’ll identify it for you.
Delivery and Shipping
Delivery and Shipping
We ship across the UK and worldwide. Choose an economical service if you can wait a few days, or express if the machine is stood still until the belt arrives. Delivery costs are worked out at checkout based on the weight of your order and where it's going. More Shipping Information
SPA 630 x 3 Groove Taper Lock Pulley - 3020 Bush
SPA 630 x 3 Groove Taper Lock Pulley - 3020 Bush is backordered and will ship as soon as it is back in stock.
The SPA630/3 is a 3-groove SPA taper lock pulley with a 630mm pitch diameter. It runs SPA wedge belts and A (13mm) classical V-belts.
It takes a 3020 taper lock bush, which takes shafts from 25mm to 75mm in standard metric bores. The bush is sold separately: choose a 3020 bush in your shaft size and the pulley can be fitted and removed without machining.
It’s made from cast iron (EN-GJL-200) with grooves to ISO 4183 and DIN 2211, black phosphated against corrosion, and statically balanced for belt speeds up to 35m/s.
Specification
| Part number | SPA630/3 |
|---|---|
| Groove section | SPA (belt top width 12.7mm) |
| Number of grooves | 3 |
| Pitch diameter | 630mm |
| Outside diameter | about 635.5mm |
| Face width | about 50mm |
| Bush size | 3020 taper lock (sold separately) |
| Shaft range | 25mm to 75mm with a metric 3020 bush |
| Material | Cast iron EN-GJL-200, black phosphated |
Check it’s the right pulley
- The old pulley should be marked SPA630/3 or SPA 630 x 3, and the bush 3020.
- Measure across the outside of the rim: about 635.5mm. The pitch diameter is smaller because it’s measured where the belt sits in the groove.
- Check your belts are SPA (or the matching classical section) and you need 3 grooves.
Not quite the right size? The nearest diameters with 3 grooves are SPA560/3 and SPA710/3. Not sure? Call 020 8138 2848 and we’ll help you find the right pulley.
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Section
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Grooves
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Pitch diameter (mm)
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Bore type
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Bush size
Payment & Security
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