NMRV-P063 25:1 Worm Gearbox - 25mm Hollow Output Bore, IEC 71/80/90 Input, Aluminium
The Motovario NMRV-P063 25:1 worm gearbox is a hybrid pre-stage worm reducer with a 63mm second-stage centre distance and a 25mm hollow output bore. The helical pre-stage delivers higher reduction in a smaller envelope than a standard NMRV063. Available with IEC 71/80/90 B14 motor input - select your motor frame from the dropdown. Supplied bare (no motor) with synthetic long-life lubrication.
Technical specification
- Frame: NMRV-P063 (centre distance 63mm)
- Reduction ratio: 25:1
- Output bore: 25mm hollow (reducing bushes available)
- Input mounting: IEC 71/80/90 B14 face flange
- Housing: aluminium, B3 foot-mounted
- Worm: hardened & ground steel; wheel: centrifugally cast bronze
- Lubrication: synthetic long-life, factory filled
- Approx. gearbox weight: 9.5kg
- Duty: S1 continuous
- Motovario part numbers: NMRV-P063-025-D71C, NMRV-P063-025-D80C, NMRV-P063-025-D90C
Applications
Conveyors, dosing pumps, mixers, label applicators, rotary tables, packaging machinery, light material handling.
Warranty and delivery
24-month Motovario manufacturer warranty. UK stock with next-day delivery.
| Input flange | B14 |
|---|---|
| IEC frame | 71 |
| Ratio | 25:1 |
| Centre distance | 63 mm |
| Output bore | 25 mm |
| Type | Worm Gearbox |
| Housing material | Aluminium |
| Series | NMRV-P063 |
| Brand | Motovario |
| Warranty | 12 months manufacturer |
| SKU | NMRV-P063-025-D71C |
| Input flange | B14 |
|---|---|
| IEC frame | 80 |
| Ratio | 25:1 |
| Centre distance | 63 mm |
| Output bore | 25 mm |
| Type | Worm Gearbox |
| Housing material | Aluminium |
| Series | NMRV-P063 |
| Brand | Motovario |
| Warranty | 12 months manufacturer |
| SKU | NMRV-P063-025-D80C |
| Input flange | B14 |
|---|---|
| IEC frame | 90 |
| Ratio | 25:1 |
| Centre distance | 63 mm |
| Output bore | 25 mm |
| Type | Worm Gearbox |
| Housing material | Aluminium |
| Series | NMRV-P063 |
| Brand | Motovario |
| Warranty | 12 months manufacturer |
| SKU | NMRV-P063-025-D90C |
UK delivery
Next working day to most of the UK, on a fully tracked courier - you'll have the tracking link the moment it leaves our racking.
★ 2pm Promise: place your order before 2pm and it is despatched the same working day. Guaranteed, not just aimed for.
Shipping worldwide
We ship to 70+ countries with rates calculated live at checkout, so the price you see is the price you pay - no surprise invoice a week later. Moving several units, or need pallet freight? Get a freight quote on WhatsApp.
Returns
Specified the wrong one? Send it back within 14 days, unused and in its original packaging, and we'll refund it. Built-to-order and modified items are the one exception. Read the full returns policy →
Availability
5 × 71 B14 on the shelf in our UK warehouse, boxed and ready to go out today.
5 × 80 B14 on the shelf in our UK warehouse, boxed and ready to go out today.
2 × 90 B14 on the shelf in our UK warehouse, boxed and ready to go out today.
Which mounting do I need?
The mounting type describes how the motor is fixed in place and how the shaft connects to your equipment. Choosing the right one ensures a direct, drop-in fit.
- B3 (Foot) - bolts down through feet on the base. The most common general-purpose mounting.
- B5 (Flange) - a large machined flange with clearance holes bolts directly to your gearbox or machine face.
- B14 (Face) - a smaller spigot/face flange with tapped holes, for lighter direct-coupled loads.
- B35 / B34 - combination mountings that provide both feet and a flange for extra support.
Still not sure? Message an engineer with your machine or existing motor's frame and we'll confirm the exact mounting for you.
Send us a message
Ask our UK engineers about this motor - sizing, stock, or a custom quote. Required fields are marked with *.

