The M3RSF60 right angle gear reducer moves the bevel-helical construction up from the entry frame to size 60, where conveyor, washer and mill-circuit drives run loaded around the clock. A spiral-bevel input stage turns the motor line 90 degrees, and two helical stages take the speed down onto a solid, foot-mounted low-speed shaft. For plants whose layouts will not allow a motor to project along the machine axis, this build keeps the drive point compact without giving up industrial-grade torque capacity.
Size 60 Brings the Right-Angle Build into Continuous Duty
At size 60 the housing, bearings and shaft diameters are dimensioned for drives that never fully stop: long-overland conveyors, drum washers and grinding circuits. The horizontally split cast-iron case opens for tooth inspection without moving the unit off its foundation, gearing is case-hardened and ground in every stage, and the bearing spans accept the overhung pull of a head pulley or the side load of a sprocket. Maintenance crews familiar with the parallel-shaft builds of the same family will find the inspection routine and the lubrication schedule identical.
What the Bevel Stage Changes Day to Day
| Drive layout | Motor sits alongside the machine instead of in line with it, freeing conveyor corridor space |
| Efficiency | One stage is a bevel gear contact, so a small efficiency trade is accepted for the 90-degree routing |
| Service | Bevel and helical stages share one oil sump; a single drain-and-fill covers the whole unit |
| Output | Solid low-speed shaft keyed for a standard coupling; hollow-shaft builds are ordered under the H code |
| Foundation | Foot mounting on industry-standard bases; a T-code torque-arm version serves shaft-mounted drives |
None of these differences require special handling on site: the right-angle build bolts down, wires up and lubricates exactly like its parallel-shaft sibling, which is why mixed plants use both layouts under one maintenance procedure.
Duties this industrial gear unit is built for:
- Troughed and pipe belt conveyors on long centre distances
- Rotary scrubbers and drum washers in mineral beneficiation
- Continuous ball and pebble mill circuits in fine grinding
- Gypsum and anhydrite calcining plant drum drives
- Harbour mobile cranes and gantry travel mechanisms
- Sludge and industrial wastewater thickener and clarifier drives
M3RSF60 Designation Breakdown
| M3 | Industrial gear unit family, three gear stages |
| R | Bevel-helical right-angle layout (P marks the all-helical parallel build) |
| S | Solid low-speed shaft (H marks a hollow shaft with key or shrink disc) |
| F | Foot mounting (T marks torque-arm mounting) |
| 60 | Frame size 60 in the horizontal range 50 to 90 |
Documentation, Selection and Delivery
WGT supplies the M-series catalogue together with the size 60 outline drawing as PDF downloads, so the foot pattern, shaft height and motor interface can be verified before ordering. Send the driven machine, the motor power and speed, the required output speed and the daily running profile; the rated torque is checked against those figures and a written quotation follows. Every unit is factory-tested, packed in an export wooden crate and covered by a one-year warranty.
Selection Example: Rotary scrubber drive
Take a 45 kW motor at 1480 rpm rotating a drum scrubber shell at 22 rpm. The ratio follows directly: 1480 / 22 = 67.3, so a ratio near i=67 is selected with the service factor raised for rocky feed. In this case the right-angle input keeps the motor alongside the drum instead of over the feed chute. That is the whole calculation. If your duty involves heavy starting, frequent reversing or many stops per hour, tell us and we raise the service factor.
Which Frame Size Do You Need?
| Model | Centre distance | Output | Typical duty |
|---|
| M3RSF60 | size 60 | solid shaft, foot, right-angle | screw classifiers, feeders |
| M3PSF50 | size 50 | solid shaft, foot | conveyors, feeders |
| M3PSF60 | size 60 | solid shaft, foot | crushers, mixers |
| M3PSF70 | size 70 | solid shaft, foot | ball mills, shredders |
| M3PSF80 | size 80 | solid shaft, foot | kilns, heavy conveyors |
| M3PSF90 | size 90 | solid shaft, foot | mill and kiln drives |
| M3RSF50 | size 50 | solid shaft, foot, right-angle | inclined conveyors, elevators |
| M3RHF70 | size 70 | hollow shaft, foot, right-angle | agitators, drum drives |
| M3PHT80 | size 80 | hollow shaft, torque arm, parallel | shaft-mounted conveyors |
| M3RHT90 | size 90 | hollow shaft, torque arm, right-angle | heavy shaft-mounted drives |
Foot-mounted frames are listed below; torque-arm (T), hollow-shaft (H) and vertical (V) variants are available across the size range. Ask for the outline drawing to check the interface before ordering.
Answers to Common Questions
Which mounting positions can be used?
The unit can be installed in M1 to M6 positions - floor, wall or ceiling. The oil level plug is repositioned for the position you order, so state it up front and the unit is filled and labelled correctly at the works.
Can I reuse my existing couplings and foundations?
Yes. Centre distances, shaft dimensions and flange bolt patterns follow the common industry standards, so couplings, guards and foundations do not have to be redesigned. Send the nameplate details and we confirm the equivalent frame in writing.
Can the reducer be used outdoors or in a washdown area?
Standard paint and NAK seals suit sheltered outdoor duty. For washdown or coastal sites specify the heavy-duty coating, FKM seals and stainless fasteners; for humid rooms we recommend the breather and oil-check routine in the manual.
![gearbox sizing steps for engineers]()
Four steps from your application data to a firm model number.
Case Notes from the Field
Glass batch charger
A float-glass line drives its batch charger with units. Abrasive raw material demands a robust drive, and the case-hardened gears show minimal wear after years of continuous operation.
Battery slurry mixer
A battery materials plant uses reducers on slurry mixers. High shear loads are absorbed by the 42CrMo shafts, and the 94-96% efficiency keeps motor sizing and running cost down.
![industrial gear unit application overview]()
A cross-section of the installations we supply every month.
Request the Datasheet and Dimension Drawing
Need documentation for approval? Try the WGT Motor & Gearbox Online Selection System, then send the result sheet - we return a complete datasheet, drawing and price the same day.
We issue complete technical files on request: dimension drawing, rating table, test record format and material certificates, in English and ready for your engineering or purchasing approval package. Looking for a gearbox for packaging machine? Tell us the duty point and we will confirm the model in writing.
