CHR 08 Worm Gearbox with Input Shaft (Ø35 mm output shaft)
CHR 08 — the CH worm gearbox with a solid input shaft instead of the motor flange — for belt, chain or coupling drives, or a motor mounted separately. Aluminium housing, hollow output shaft with 35 mm bore, keyed; foot mounting with the A (feet) body as the catalogue's CHR/CHRE drawings — the ..P flange-output execution is available too. Input shaft Ø25 h6 × 50 mm with M8 centre thread, output 35 H7 hollow bore with 10 mm keyway (body and shaft dimensions on the CHR/CHRE sheet; everything else as the CH 08). Filled for life with synthetic oil — no oil changes, no maintenance; aluminium housing.
How to pick from the table: the figures are for a 1400 r/min input (a 4-pole motor's speed) — the ratio sets the output speed, P1 is the input power the catalogue rates the row at and the service factor is the margin at that power. Drive the input shaft slower or faster and the output speed scales with it; ask us to check the rating if your input speed differs.
Product Configuration
Select a row to add it to your quote
CHR 08: ratings as the CH 08 at 1400 r/min input; input shaft Ø25 h6 × 50 mm.
| Code | Ratio | Output speed | Input power P1 | Output torque | Service factor |
|---|---|---|---|---|---|
CHR-08 R.7 |
7:1
|
200 r/min
|
4 kW
|
170 Nm
|
1.5
|
CHR-08 R.10 |
10:1
|
140 r/min
|
4 kW
|
240 Nm
|
1.2
|
CHR-08 R.15 |
15:1
|
93 r/min
|
4 kW
|
350 Nm
|
0.9
|
CHR-08 R.20 |
20:1
|
70 r/min
|
3 kW
|
340 Nm
|
0.9
|
CHR-08 R.23 |
23:1
|
61 r/min
|
2.2 kW
|
280 Nm
|
1.1
|
CHR-08 R.30 |
30:1
|
47 r/min
|
2.2 kW
|
340 Nm
|
1.1
|
CHR-08 R.40 |
40:1
|
35 r/min
|
1.85 kW
|
340 Nm
|
0.9
|
CHR-08 R.46 |
46:1
|
30 r/min
|
1.5 kW
|
340 Nm
|
1
|
CHR-08 R.56 |
56:1
|
25 r/min
|
1.1 kW
|
290 Nm
|
1
|
CHR-08 R.64 |
64:1
|
22 r/min
|
1.1 kW
|
290 Nm
|
0.9
|
CHR-08 R.80 |
80:1
|
17 r/min
|
0.75 kW
|
260 Nm
|
1
|
CHR-08 R.100 |
100:1
|
14 r/min
|
0.55 kW
|
220 Nm
|
1
|
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Product Information
Reading the table
Each row is one ratio: output speed at 1400 r/min in, the rated input power P1, the output torque at that power and the service factor. Where the catalogue prints a power the gear cannot fully use (marked in the row note), choose by torque, not power.
Service factor — the number that decides how long your gearbox lives
It's the safety margin between what the gearbox can handle and what the drive asks of it: 1.0 means the gearbox works exactly at its rated limit; higher means reserve capacity — a cooler, quieter drive and a much longer life. As a guide: smooth, steady loads (light conveyors, centrifugal pumps) are fine near 1.0; moderate loads (heavier conveyors, packing machines) deserve 1.3 or more; heavy duty (mixers, bucket elevators, frequent starts, long running hours) should sit at 1.5–2.0.
- Material
- Aluminium housing
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