The EP-SPA 4-Groove V-Belt Pulley Series groups 28 catalogue configurations around one buyer decision: a four-belt pulley for general industrial narrow V-belt drives. Rather than treating diameter alone as the model identity, selection stays tied to the listed P/O pair, shaft interface and E/F/J/K/L/M/N construction values.
The SPA profile is 12.7 × 10 mm. In procurement language the same component may be called a V-belt pulley or sheave; keep the belt section unchanged unless the whole drive is being redesigned.
SPA four-belt specifications
Use the complete table below to identify the exact EP- model. It retains 28 dimensional rows rather than creating a separate near-identical sales page for every diameter.
| EP Model | P (mm) | O (mm) | Type | Bush | Max Bore (mm) | E | F | J | K | L | M | N |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EP-SPA 90-04 | 90 | 95.5 | 3 | 1615 | 42 | - | 65 | 64 | 13.5 | 38 | 13.5 | - |
| EP-SPA 95-04 | 95 | 100.5 | 3 | 1615 | 42 | - | 65 | 64 | 13.5 | 38 | 13.5 | - |
| EP-SPA 100-04 | 100 | 105.5 | 2 | 1615 | 42 | - | 65 | 70 | - | 38 | 27 | - |
| EP-SPA 106-04 | 106 | 111.5 | 8 | 2012 | 50 | - | 65 | 76 | 33 | 32 | - | - |
| EP-SPA 112-04 | 112 | 117.5 | 8 | 2012 | 50 | - | 65 | 80 | 33 | 32 | - | - |
| EP-SPA 118-04 | 118 | 123.5 | 2 | 2012 | 50 | - | 65 | 86 | - | 32 | 33 | - |
| EP-SPA 125-04 | 125 | 130.5 | 2 | 2012 | 50 | - | 65 | 92 | - | 32 | 33 | - |
| EP-SPA 132-04 | 132 | 137.5 | 2 | 2517 | 60 | - | 65 | 98 | - | 45 | 20 | - |
| EP-SPA 140-04 | 140 | 145.5 | 2 | 2517 | 60 | - | 65 | 106 | - | 45 | 20 | - |
| EP-SPA 150-04 | 150 | 155.5 | 2 | 2517 | 60 | - | 65 | 116 | - | 45 | 20 | - |
| EP-SPA 160-04 | 160 | 165.5 | 2 | 2517 | 60 | - | 65 | 126 | - | 45 | 20 | - |
| EP-SPA 170-04 | 170 | 175.5 | 2 | 2517 | 60 | - | 65 | 138 | - | 45 | 20 | - |
| EP-SPA 180-04 | 180 | 185.5 | 2 | 2517 | 60 | - | 65 | 146 | - | 45 | 20 | - |
| EP-SPA 190-04 | 190 | 195.5 | 2 | 2517 | 60 | - | 65 | 158 | - | 45 | 20 | - |
| EP-SPA 200-04 | 200 | 205.5 | 2 | 3020 | 75 | - | 65 | 165 | - | 51 | 14 | - |
| EP-SPA 212-04 | 212 | 217.5 | 2 | 3020 | 75 | - | 65 | 177 | - | 51 | 14 | - |
| EP-SPA 224-04 | 224 | 229.5 | 2 | 3020 | 75 | - | 65 | 189 | - | 51 | 14 | - |
| EP-SPA 250-04 | 250 | 255.5 | 6 | 3020 | 75 | 10 | 65 | 215 | 7 | 51 | 7 | 150 |
| EP-SPA 280-04 | 280 | 285.5 | 6 | 3020 | 75 | 10 | 65 | 245 | 7 | 51 | 7 | 150 |
| EP-SPA 315-04 | 315 | 320.5 | 6 | 3020 | 75 | 10 | 65 | 280 | 7 | 51 | 7 | 150 |
| EP-SPA 355-04 | 355 | 360.5 | 5 | 3020 | 75 | - | 65 | 320 | 7 | 51 | 7 | 150 |
| EP-SPA 400-04 | 400 | 405.5 | 5 | 3020 | 75 | - | 65 | 365 | 7 | 51 | 7 | 150 |
| EP-SPA 450-04 | 450 | 455.5 | 5 | 3020 | 75 | - | 65 | 415 | 7 | 51 | 7 | 150 |
| EP-SPA 500-04 | 500 | 505.5 | 5 | 3020 | 75 | - | 65 | 465 | 7 | 51 | 7 | 150 |
| EP-SPA 560-04 | 560 | 565.5 | 4 | 3535 | 90 | - | 65 | 525 | 12 | 89 | 12 | 170 |
| EP-SPA 630-04 | 630 | 635.5 | 4 | 3535 | 90 | - | 65 | 595 | 12 | 89 | 12 | 170 |
| EP-SPA 800-04 | 800 | 805.5 | 4 | 3535 | 90 | - | 65 | 765 | 12 | 89 | 12 | 170 |
| EP-SPA 1000-04 | 1000 | 1005.5 | 4 | 4040 | 90 | - | 65 | 965 | 18.5 | 102 | 18.5 | 216 |
How this groove count changes selection
On a four-belt assembly, groove count fixes much of the face-width decision before the final diameter is chosen. Check the belt section and matched-belt requirement, calculate the ratio from P, verify O for surrounding clearance, then confirm the hub/bush dimensions for the exact row.
Typical application discussions for SPA include agricultural machinery, compressors and pumps, industrial fans, woodworking and textile equipment. For this four-belt arrangement, agricultural, fan and industrial drives where torque demand is distributed across four grooves; final belt capacity and shaft loading still need to be checked against the actual machine duty.
Installation and replacement focus
Replacement inspection should record the old belt marking, groove count and shaft/bush reference before the worn pulley is removed. Worn grooves can disguise the original geometry, so do not identify a replacement from outside diameter alone.
Identify
Read the SPA belt marking and count the grooves before measuring the pulley.
Calculate
Use pitch/datum diameter for speed ratio; use outside diameter for space checks.
Confirm
Match shaft diameter, bush, key arrangement and the row-specific construction dimensions.
Questions to resolve before an RFQ
Which model row should I quote?
Quote the EP- designation whose P/O dimensions, groove count, bush and bore range match the machine. Add the shaft diameter and existing marking if it is a replacement.
Can another groove count be substituted?
Changing groove count changes pulley width and belt capacity. Treat that as a drive-design change rather than a direct replacement.
What if the old marking is unreadable?
Send belt markings, groove count, shaft size, photographs and measurable diameters/widths so the interface can be narrowed down.
Quote the exact row, not only the family
Send the selected EP- model, shaft diameter, driver and driven speeds, application and any drawing or replacement reference to [email protected].
