This four-belt SPZ series is the catalogue path for buyers who already know the SPZ belt section but still need to resolve diameter, shaft fit and construction details. Its listed pitch/datum diameter span is 80–800 mm, with 27 dimensional configurations retained in the live specification table.
The SPZ profile is 9.7 × 8 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.
SPZ four-belt specifications
Use the complete table below to identify the exact EP- model. It retains 27 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-SPZ 80-04 | 80 | 84 | 8 | 1210 | 32 | - | 52 | 51 | 27 | 25 | - | - |
| EP-SPZ 85-04 | 85 | 89 | 8 | 1610 | 42 | - | 52 | 60 | 27 | 25 | - | - |
| EP-SPZ 90-04 | 90 | 94 | 8 | 1610 | 42 | - | 52 | 61 | 27 | 25 | - | - |
| EP-SPZ 95-04 | 95 | 99 | 8 | 1610 | 42 | - | 52 | 66 | 27 | 25 | - | - |
| EP-SPZ 100-04 | 100 | 104 | 8 | 1610 | 42 | - | 52 | 72 | 27 | 25 | - | - |
| EP-SPZ 106-04 | 106 | 110 | 8 | 1610 | 42 | - | 52 | 80 | 27 | 25 | - | - |
| EP-SPZ 112-04 | 112 | 116 | 8 | 2012 | 50 | - | 52 | 86 | 20 | 32 | - | - |
| EP-SPZ 118-04 | 118 | 122 | 8 | 2012 | 50 | - | 52 | 92 | 20 | 32 | - | - |
| EP-SPZ 125-04 | 125 | 129 | 2 | 2012 | 50 | - | 52 | 99 | 20 | 32 | 20 | - |
| EP-SPZ 132-04 | 132 | 136 | 2 | 2012 | 50 | - | 52 | 104 | 20 | 32 | 20 | - |
| EP-SPZ 140-04 | 140 | 144 | 2 | 2012 | 50 | - | 52 | 112 | 7 | 32 | 20 | - |
| EP-SPZ 150-04 | 150 | 154 | 2 | 2517 | 60 | - | 52 | 122 | 7 | 45 | 7 | - |
| EP-SPZ 160-04 | 160 | 164 | 2 | 2517 | 60 | - | 52 | 132 | 7 | 45 | 7 | - |
| EP-SPZ 170-04 | 170 | 174 | 2 | 2517 | 60 | - | 52 | 141 | 7 | 45 | 7 | - |
| EP-SPZ 180-04 | 180 | 184 | 2 | 2517 | 60 | - | 52 | 152 | 7 | 45 | 7 | - |
| EP-SPZ 190-04 | 190 | 194 | 6 | 2517 | 60 | 10 | 52 | 161 | 3.5 | 45 | 3.5 | 120 |
| EP-SPZ 200-04 | 200 | 204 | 6 | 2517 | 60 | 10 | 52 | 172 | 3.5 | 45 | 3.5 | 120 |
| EP-SPZ 224-04 | 224 | 228 | 6 | 2517 | 60 | 10 | 52 | 196 | 3.5 | 45 | 3.5 | 120 |
| EP-SPZ 250-04 | 250 | 254 | 5 | 2517 | 60 | - | 52 | 222 | 3.5 | 45 | 3.5 | 120 |
| EP-SPZ 280-04 | 280 | 284 | 5 | 2517 | 60 | - | 52 | 252 | 3.5 | 45 | 3.5 | 120 |
| EP-SPZ 315-04 | 315 | 319 | 5 | 2517 | 60 | - | 52 | 287 | 3.5 | 45 | 3.5 | 120 |
| EP-SPZ 355-04 | 355 | 359 | 5 | 2517 | 60 | - | 52 | 326 | 3.5 | 45 | 3.5 | 120 |
| EP-SPZ 400-04 | 400 | 404 | 5 | 2517 | 60 | - | 52 | 371 | 3.5 | 45 | 3.5 | 120 |
| EP-SPZ 450-04 | 450 | 454 | 5 | 3020 | 75 | - | 52 | 421 | 0.5 | 51 | 0.5 | 150 |
| EP-SPZ 500-04 | 500 | 504 | 5 | 3020 | 75 | - | 52 | 471 | 0.5 | 51 | 0.5 | 150 |
| EP-SPZ 630-04 | 630 | 634 | 4 | 3030 | 75 | - | 52 | 601 | 12 | 76 | 12 | 150 |
| EP-SPZ 800-04 | 800 | 804 | 4 | 3030 | 75 | - | 52 | 771 | 12 | 76 | 12 | 150 |
How this groove count changes selection
Because four-belt layouts emphasize a broader multi-belt arrangement with more axial width to check, start with the required speed ratio and identify the nearest standard P value. Then compare O with the guard envelope, and only after that confirm whether the listed bush and maximum bore 32–75 mm range can accommodate the shaft.
Typical application discussions for SPZ include compact fans, pumps, machine auxiliaries and space-constrained 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
For agricultural, fan and industrial drives where torque demand is distributed across four grooves, alignment should be checked across both pulley faces after the bush is seated. Avoid using belt tension to pull a misaligned pulley into position; verify shaft seating and groove alignment first, then tension the matched belt set according to the belt supplier’s procedure.
Identify
Read the SPZ 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].
