For a 4-groove SPB drive, this series page is the dimensional working sheet. It spans P 125–1250 mm and uses bush references 2012, 2517, 3020, 3535, 4040, 4545; the correct row is chosen from the machine ratio, shaft diameter, available axial space and the construction type shown for that row.
The SPB profile is 16.3 × 13 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.
SPB 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-SPB 125-04 | 125 | 132 | 3 | 2012 | 50 | - | 82 | 82 | 25 | 32 | 25 | - |
| EP-SPB 132-04 | 132 | 139 | 3 | 2012 | 50 | - | 82 | 89 | 25 | 32 | 25 | - |
| EP-SPB 140-04 | 140 | 147 | 3 | 2517 | 60 | - | 82 | 97 | 18.5 | 45 | 18.5 | - |
| EP-SPB 150-04 | 150 | 157 | 3 | 2517 | 60 | - | 82 | 107 | 18.5 | 45 | 18.5 | - |
| EP-SPB 160-04 | 160 | 167 | 3 | 2517 | 60 | - | 82 | 117 | 18.5 | 45 | 18.5 | - |
| EP-SPB 170-04 | 170 | 177 | 3 | 2517 | 60 | - | 82 | 127 | 18.5 | 45 | 18.5 | - |
| EP-SPB 180-04 | 180 | 187 | 3 | 2517 | 60 | - | 82 | 137 | 18.5 | 45 | 18.5 | - |
| EP-SPB 190-04 | 190 | 197 | 3 | 2517 | 60 | - | 82 | 147 | 18.5 | 45 | 18.5 | - |
| EP-SPB 200-04 | 200 | 207 | 3 | 3020 | 75 | - | 82 | 157 | 15.5 | 51 | 15.5 | - |
| EP-SPB 212-04 | 212 | 219 | 3 | 3020 | 75 | - | 82 | 169 | 15.5 | 51 | 15.5 | - |
| EP-SPB 224-04 | 224 | 231 | 3 | 3020 | 75 | - | 82 | 181 | 15.5 | 51 | 15.5 | - |
| EP-SPB 236-04 | 236 | 243 | 3 | 3020 | 75 | - | 82 | 193 | 15.5 | 51 | 15.5 | - |
| EP-SPB 250-04 | 250 | 257 | 6 | 3020 | 75 | 14 | 82 | 207 | 15.5 | 51 | 15.5 | 150 |
| EP-SPB 280-04 | 280 | 287 | 6 | 3020 | 75 | 16 | 82 | 237 | 15.5 | 51 | 15.5 | 150 |
| EP-SPB 300-04 | 300 | 307 | 6 | 3020 | 90 | 16 | 82 | 257 | 15.5 | 51 | 15.5 | 150 |
| EP-SPB 315-04 | 315 | 322 | 7 | 3535 | 90 | 16 | 82 | 272 | 3.5 | 89 | 3.5 | 170 |
| EP-SPB 335-04 | 335 | 342 | 7 | 3535 | 90 | 16 | 82 | 292 | 3.5 | 89 | 3.5 | 170 |
| EP-SPB 355-04 | 355 | 362 | 7 | 3535 | 90 | 16 | 82 | 312 | 3.5 | 89 | 3.5 | 170 |
| EP-SPB 400-04 | 400 | 407 | 4 | 3535 | 90 | - | 82 | 357 | 3.5 | 89 | 3.5 | 170 |
| EP-SPB 450-04 | 450 | 457 | 4 | 3535 | 90 | - | 82 | 407 | - | 89 | 7 | 170 |
| EP-SPB 500-04 | 500 | 507 | 4 | 3535 | 90 | - | 82 | 457 | - | 89 | 7 | 170 |
| EP-SPB 560-04 | 560 | 567 | 4 | 3535 | 90 | - | 82 | 517 | - | 89 | 7 | 170 |
| EP-SPB 630-04 | 630 | 637 | 4 | 3535 | 90 | - | 82 | 587 | - | 89 | 7 | 170 |
| EP-SPB 710-04 | 710 | 717 | 4 | 3535 | 90 | - | 82 | 664 | 3.5 | 89 | 3.5 | 187 |
| EP-SPB 800-04 | 800 | 807 | 4 | 4040 | 100 | - | 82 | 754 | 4 | 102 | 16 | 200 |
| EP-SPB 900-04 | 900 | 907 | 4 | 4040 | 100 | - | 82 | 854 | 4 | 102 | 16 | 216 |
| EP-SPB 1000-04 | 1000 | 1007 | 4 | 4040 | 100 | - | 82 | 954 | 4 | 102 | 16 | 216 |
| EP-SPB 1250-04 | 1250 | 1257 | 4 | 4545 | 110 | - | 82 | 1204 | 6 | 114 | 26 | 225 |
How this groove count changes selection
Treat the model row as an interface record. P controls the theoretical ratio; O affects physical clearance; the bush and maximum-bore entries constrain shaft fit; E/F/J/K/L/M/N describe the remaining construction dimensions that may matter to a replacement.
Typical application discussions for SPB include larger pumps, compressors, material-handling systems and process machinery. 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
A wider or narrower pulley bank changes more than belt count. Re-check axial space, key position, shaft shoulder clearance and guard width before installation, and inspect the full belt set for uneven wear that could indicate an alignment problem.
Identify
Read the SPB 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].
