V-belt pulley SPA 250/5, 5 grooves, for Taper-Lock 3020, cast iron
Available product promotions:
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Weight10,5kg
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UPC Code5908453513397
Product Description
V-belt pulley SPA 250/5, 5 grooves, for Taper-Lock 3020, cast iron is a pulley for narrow SPA V-belts: datum diameter 250 mm, outside diameter 255.5 mm, 5 grooves. It is made of EN-GJL-200 grey cast iron, phosphated and statically balanced for a peripheral speed of up to 35 m/s.
The pulley has a seat for a Taper-Lock 3020 clamping bush (bush sold separately) - the bush bore is chosen to suit the shaft, up to 75 mm, without boring the pulley. The face width is 80 mm with a groove pitch of 15 mm.
Technical data
| Groove profile | SPA (ISO 4183, DIN 2211) |
| V-belt | SPA 12.7 × 10 mm (narrow section), also classical A/13 |
| Datum diameter dp | 250 mm |
| Outside diameter De | 255.5 mm |
| Number of grooves | 5 |
| Groove pitch e | 15 mm |
| Face width F | 80 mm |
| Taper-Lock bush | 3020 (sold separately) |
| Max. bush bore | 75 mm |
| Material | EN-GJL-200 cast iron, phosphated |
| Max. peripheral speed | 35 m/s |
| Weight | 10.5 kg |
| EAN | 5908453513397 |
Applications
Drives of pumps, compressors, fans and blowers, agricultural machinery, machine tools and conveyors.
Frequently asked questions
Which V-belt pulley has the SPA profile, a datum diameter of 250 mm and 5 grooves?
This is the v-belt pulley SPA 250/5, 5 grooves, for Taper-Lock 3020, cast iron. The outside diameter is 255.5 mm and the face width 80 mm.
Which V-belt fits this pulley?
A narrow SPA V-belt (12.7 × 10 mm) to ISO 4184 / DIN 7753. Classical A belts (13 mm) to DIN 2215 also run in SPA grooves, but transmit less power. The number of belts equals the number of grooves (5).
Which Taper-Lock bush do I need for this pulley?
A Taper-Lock 3020 bush. The bush is bought separately and its bore is chosen to match the shaft diameter - up to 75 mm for this pulley. The bush clamps onto the shaft when the screws are tightened, so the pulley does not need to be bored and removal is easy.
How do I calculate the belt speed on this pulley?
Belt speed v = π × dp × n / 60 000, where dp is the datum diameter in mm and n is the speed in rpm. On this pulley at 1450 rpm the belt runs at approx. 19 m/s. The pulley is statically balanced up to 35 m/s.
How do I calculate the ratio of a drive with this pulley?
The ratio is the datum diameter of the driven pulley divided by that of the driving pulley, e.g. 250 / 125 = 2. Because of the slight slip of the V-belt, the actual speed is approx. 1-2% lower.
What does the lead time depend on?
When ordering, please check the current stock level of this pulley - the lead time depends on it and is clearly stated according to the quantity available in each warehouse. The stock level is shown above the product price and may differ between warehouses.
Product photos are for illustration purposes only.
Product Features
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Weight10,5kg
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UPC Code5908453513397