Inputs
B5 flange · B14 flange · single shaft · double shaft · tail shaft. B5/B14 follow IEC so a third-party motor still bolts on.
Worm gear reducers (RV series)
High-ratio self-locking drives — 7.5:1–100:1, nine input/output kits that combine without a special housing.
7.5:1–100:1NMRV030–130B5 / B14 + shaft inputsSingle / double shaft, flange, torque armHolds the load on power loss
Frames
When power is removed the worm set holds the load. Use it on lifts, turntables, mixers, conveyors, packaging and indexer drives (often with a clutch-brake group).
NMRV030 / 040 / 050 — compact. 40/60/90/120W on RV030; 140/180W on RV040/050.
NMRV063 / 075 / 090 — workhorse. Example: NMRV063U, 60:1, motor flange 80B14/B5.
NMRV110 / 130 — heavier frames, often with a PC080/PC090 pre-stage.
Modular kits
A small set of parts covers the duty — the same idea as a modular competitor catalog, without extra SKUs on the shelf.
Outputs
Single shaft · double shaft · low output flange · high output flange · torque arm.
PC pre-stage (YS motor + PC + RV)
Order fields: model (e.g. NMRV063U) · ratio · motor flange · colour (default blue) · output kit · oil (WA320 / WA680).
| PC | Fits RV | Ratio |
|---|---|---|
| PC063 | RV040 / RV050 | 3:1 |
| PC071 | RV050 / RV063 / RV075 | 3:1 |
| PC080 | RV075 / RV090 / RV110 / RV130 | 3:1 |
| PC090 | RV110 / RV130 | 2.43:1 |
Four reasons for NMRV
Self-locking
The worm holds the load when power is gone.
Mix and match
4 inputs × 5 outputs × PC third stage.
IEC interface
B5/B14 flanges take a standard motor.
Oil
WA320 / WA680 worm oils for slow, heavy duty.
Output-torque and allowable-input tables by frame, self-locking efficiency vs ratio, and WP cast-iron worm parameters are issued from engineering. Those sheets are not guessed on this page.
Size an NMRV with a YS motor
Send flange, ratio and whether you need a PC pre-stage.