6V 12V DC High Torque Worm Geared 595 Electric Motor 98:1, Right-Hand Gearbox 62rpm No-load, 25kg-cm Continuous, >100kg-cm Peak

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Seller: gimsonrobotics ✉️ (3,872) 100%, Location: Bristol, Avon, GB, Ships to: WORLDWIDE, Item: 112153311552 6V 12V DC High Torque Worm Geared 595 Electric Motor 98:1, Right-Hand Gearbox. We are one of the most popular suppliers of linear actuators and DC motors in the United Kingdom, with full product support and user advice available. Unlike some cheaper re-sellers all of our items are thoroughly tested and covered by a 1-year limited warranty. We are highly knowledgeable in our field , insured, and VAT-registered. Take a look at our other eBay listings for related products  (and sometimes B-grade items available at a discount).  Prices displayed are inclusive of 20% UK VAT, if you require a VAT invoice please request this when ordering.  Please contact us  if you are ordering from a VAT-registered business in an EU country (excluding the UK) or from a country outside of the EU.

The GR-WM1 is a DC motor and gearbox combination featuring a three-stage 98:1 reduction gearbox. The first gearbox stage is a worm and wheel meaning that the transmission cannot be back-driven once in position. All six gears are constructed of metal with the output stage spur gears a relatively large 1.25 MOD size allowing for high torque transmission.

The no-load speed at 12V DC after the gearbox is 62rpm reducing to 52rpm at the maximum efficiency torque output of 25kg-cm (2.45Nm, 347oz-in). Short term torque output may exceed 100kg-cm. The motor may be operated at anywhere between 3-12V, with a maximum continuous output of 24W at 12V. 


This gearmotor provides an ideal solution for applications requiring a high output torque from a compact device which doesn't demand high levels of current. The right-angle output shaft can also enable the motor to fit in positions that planetary and conventional spur gear motors wouldn't be able to.

Special effects, DIY, robotics and automation projects could all benefit from the steady output speed and the resistance to being rotated, provided by the worm and wheel stage once the motor is in a position. 

The motor is a '595' type, with a 36mm can diameter. It features a cooling fan towards the rear of its body to enable high duty cycle operation. For continuous usage (100% duty cycle) please don't exceed 25kg-cm of torque at 12V, and ensure that the rear of the motor is well ventilated. 

The motor input lead extends 180mm from the rear of the body and has a male 2.1 x 5.5mm DC connector (centre-positive). Also included with each motor is a female DC to screw terminal adapter, making it extremely easy to add the motor to your existing circuit or wiring. 

This is the same motor that is featured on the GR-RK1 linear actuator .


Gearbox Build Detail:
Size: The gearbox body is 58x58x37mm overall (excluding output shaft) The motor is a maximum of 38mm diameter by 80mm long (with the lead bent) The overall motor and gearbox size is 138mmx60x54mm
Mounting: Three M4 threaded holes on the side face of the gearbox (the same side that the output shaft extends from)
Body material: Steel and aluminium
Gearbox type: 97.5:1 ratio, three-stage (worm and wheel first stage then two spur gear stages), all metal construction
Shaft type: 8mm diameter by 16mm long with a 12mm long 'D' flat
Shaft support: Dual ball-bearings (one 8mm, one 12mm) 
Weight: 680g (including lead and connector)
Operating Characteristics:
at 6V DC:
at 12V DC:
No-load motor speed: 3050rpm 6100rpm
No-load speed after gearbox: 31rpm 62rpm
No-load current: 0.2A 0.35A
Maximum efficiency torque: 12.5kg-cm 25kg-cm
Maximum efficiency speed after gearbox: 26rpm 52rpm
Maximum efficiency current: 1.3A 2.6A
Stall torque: 75kg-cm 150kg-cm
Stall current: 6A 12A
Maximum continuous output: 9W 24W

Some of the above figures are theoretical and may vary slightly between motors and gearboxes. Please allow for +/-5% on most values. 

So as not to damage the gearbox please try to prevent stall situations, either mechanically or by fitting a fuse in series with the motor input. 

If you have any questions about this item please contact us via eBay messaging or using the contact page  of our website.
  • Condition: New
  • Brand: Gimson Robotics
  • MPN: GR-WM1

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