Product line
Gearboxes
A gearbox, or speed reducer, sits between the motor and the machine and converts the drive, reducing the rotational speed and increasing the torque available at the output. We supply worm gearboxes (RMI, VMR, UMI, VR and VR-E), helical gearboxes (AMP, AMF and WPR), flat units (PMP, PMF and WPF), bevel helical gearboxes (WSKA, OMP and OMF) and planetary gearboxes, whose EX designation is a series name rather than an explosion rating. Alongside those sit furnace gearboxes, feed gearboxes, variators, PC adapters and the accessories that mount them.
The type follows the job. Worm units are compact, quiet and economical. Helical units give high efficiency and take continuous duty. Bevel helical units turn the drive through 90 degrees. Planetary units carry the highest loads and the biggest torques, while flat units fit where mounting space is short. The same families are also supplied as gear motors with the electric motor fitted. Tell us the output speed, the torque, the type of load and how the unit mounts, and we confirm the series and quote within one working day.
Types of gearboxes
Worm gearboxes
Right-angle worm gear reducers in five series, sized on your load, speed and mounting.
DiscoverInline helical gearboxes
Coaxial helical gear units in the AMP, AMF and WPR series, sized against your real load.
DiscoverParallel shaft gearboxes
Flat, parallel shaft gear units in the PMP, PMF and WPF series for drives with little room to spare.
DiscoverBevel helical gearboxes
Right-angle gear units in the WSKA, OMP and OMF series, for drives that have to turn a corner.
DiscoverPlanetary gearboxes
EX series planetary gear reducers: high torque in compact dimensions, with low vibration.
DiscoverMechanical speed variators
Stepless mechanical speed control without an inverter, sized on range, load and mounting.
DiscoverKiln drive gearboxes
Slow-speed worm gearboxes for kiln drives: ratios of 1/200 and 1/450, output 1.15 rpm at 1:200.
DiscoverFeed auger gearboxes
Geared motors for spiral feed conveyors: 0.75 to 1.5 kW, with 550, 450 or 275 rpm output.
DiscoverPC pre-stage units
Modular pre-stage reducers that add a threefold step ahead of any worm gearbox, to i=300.
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All series in this line
Worm gearboxes
RMI worm gearboxes
RMI worm gearboxes in sizes 28 to 250, ratios 7 to 100 per stage and 10,000 combined, torque to 2,100 Nm. We size each unit on your real load and duty.
DiscoverWorm gearboxes
VMR worm gearboxes
VMR worm gearboxes in sizes 30 to 150, aluminium or cast iron, with FA to FE flanges. Shafts, bushes and diameters made to drawing for an exact fit.
DiscoverWorm gearboxes
UMI universal worm gearboxes
UMI universal worm gearboxes mount in any position and carry a jaw coupling for overload protection. We size each worm gear reducer to your duty.
DiscoverWorm gearboxes
VR worm gearboxes
VR worm gearboxes have a solid input shaft and no motor interface, for handwheel or belt drive. High reduction from a compact worm gear reducer.
DiscoverWorm gearboxes
VR-E worm gearboxes
VR-E worm gearboxes are the E build of the VR series: solid input shaft, handwheel or belt drive, and high reduction from a compact worm gear reducer.
DiscoverInline helical gearboxes
AMP and AMF inline helical gearboxes
AMP and AMF inline helical gearboxes: 12 to 4500 Nm, 0.03 to 88.97 kW, ratios 1/2.4 to 1/301.2, one-piece cast housing. Sized to your load, quoted within one working day.
DiscoverInline helical gearboxes
WPR inline helical gearboxes
WPR inline helical gearboxes: a light, high-efficiency cylindrical gear unit with a wide choice of ratios. We size it on your real load and quote in a day.
DiscoverParallel shaft gearboxes
PMP and PMF parallel shaft gearboxes
PMP and PMF parallel shaft gearboxes: three reduction stages, a monolithic cast housing and ground, case-hardened gears for heavy duty. Quoted in one day.
DiscoverParallel shaft gearboxes
WPF parallel shaft gearboxes
WPF parallel shaft gearboxes for tight installations: low profile, several working positions and long inspection intervals. Sized and quoted in one day.
DiscoverBevel helical gearboxes
WSKA bevel helical gearboxes
WSKA bevel helical gearboxes turn the drive through 90 degrees at high efficiency, in both directions and across a wide speed range. Quoted in one working day.
DiscoverBevel helical gearboxes
OMP and OMF bevel helical gearboxes
OMP and OMF bevel helical gearboxes: two and three stage, one-piece cast housing, with backstop, shrink disc and taper bush options. Quoted in one day.
DiscoverPlanetary gearboxes
EX planetary gearboxes
EX planetary gearboxes carry very high loads in a compact frame: foot or flange mounting, IEC-PAM adapter and the EXB right-angle version. quoted within one working day.
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Main features
Worm, helical, bevel helical, planetary and flat types
Furnace gearboxes, feed gearboxes and variators supplied
Right-angle drive through 90 degrees from WSKA, OMP, OMF
Series include RMI, VMR, UMI, AMP, WPR, WSKA and EX
Supplied on their own or as a complete gear motor
Sized on output speed, torque and mounting
Questions we get asked
What does a gearbox do?
It converts the drive between the motor and the machine. Depending on how it is built, it reduces the rotational speed and increases the torque at the output, so the machine gets the movement it was designed for instead of the motor speed. The gearing also decides how efficiently that happens and at what angle the drive leaves the unit.
Which gearbox type should I choose?
Worm gearboxes are compact, quiet and economical. Helical gearboxes give high efficiency and take continuous duty. A bevel helical unit turns the drive through 90 degrees, which is what you want where the motor cannot sit in line with the machine. Planetary units take the highest loads and the largest torques, and flat units are made for installations with little mounting space.
Can I buy a gearbox without the motor?
Yes. Each family is supplied on its own, and the same families are also built as gear motors with the electric motor fitted to the unit. The gear motor is the integrated version: motor and gearbox in one housing, which saves space and removes the mounting problems of two separate components. Tell us which of the two you want quoted.
What do you need to specify a gearbox?
The output speed and the torque first, because they set the type and the size. Then the character of the load: constant, variable, shock or frequent start-stop cycles. Then the mounting position, the space available and how the torque leaves the unit, by output shaft, flange or torque arm. Dust, damp and temperature affect the version and the lubrication.
Request a quotation
Quote for gearboxes
Reply within one working day with a price, a lead time and the datasheet.
What lets us quote first time
- Input: IEC motor size and mounting, or free shaft
- Ratio
- Output torque and speed
- Mounting and shaft