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Worm Gearbox JRST Euronorm Header

Worm Gearbox JRST

The JRST series comprises worm gear reducers with a full input shaft. The input torque on the worm shaft can be applied using a handwheel or a rotating drive shaft connected via a coupling.

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Worm Gearbox JRST Euronorm Product
Worm Gearbox JRST | With solid input shaft

Product Info

The JRST-series worm gear reducers feature a solid input shaft. This shaft allows for the installation of, for instance, a coupling to drive the worm gear unit.

The product range, including torque values, gear ratios, and shaft sizes, is detailed in the table on the right.

Additional options for the JRST-series include:

  • Can be assembled in any configuration thanks to the universal gear casing
  • Suitable for areas with an explosion risk thanks to compliance with the ATEX regulations.
  • Fully interchangeable with all major makes of worm gear reducers
  • Excellent price/quality ratio


Gear size:25 ~ 150
Ratio:5 ~ 100
Power:0,12 ~ 15 kW
Torque range:5 ~ 2.000 Nm


Product description

Worm Gearbox
With solid input shaft
JRST series


Worm Gearbox Options

The worm gear reducer consists of a worm and worm wheel enclosed in a square housing. Due to this design, the worm gear reducer can be mounted in various ways within the machine or application. Additionally, various accessories are available for easy installation.


Transmission Ratio

The worm gear transmission is available in ratios from i=7.5 to i=100. With a double worm gear transmission, ratios of up to i=10,000 can be achieved.


Options On The Worm Gearbox

The JRST / NMRV types are equipped with an IEC mounting flange type B5 (large flange) or type B14a (small flange). This allows standard IEC motors to be attached to the reducer.

Depending on the application, an ATEX certification may be required for the worm gear reducer. For this, you can also turn to Euronorm.

The worm gear reducers are available within the scope mentioned below:

  • Construction sizes from 25 to 150
  • Torques from 14Nm to 3,000Nm
  • Output shaft sizes from 11mm to 50mm
  • Gear ratios from i=7.5 to i=10,000
  • Power ratings from 0.06kW to 15kW


Quality Of The Worm Gearbox

The quality of the drive is guaranteed by producing exclusively under UNI EN ISO 9001:2008 standards. Supplied materials are also rigorously inspected and chosen for their proven quality.

The use of A-brand wear parts such as NSK bearings and Simrit oil seals, finely machined components, and the application of precisely hardened and ground gears (grade 6) ensure a long lifespan, minimal noise, and high efficiency.


Euronorm Worm Gearbox Stock

Euronorm keeps a large inventory of worm gear transmissions in stock and can deliver them quickly. Additionally, there is ample availability of various motors and other drive components.

Euronorm is also capable of making modifications in its own workshop, assembling drives, and painting them in the color of the customer’s choice.All of this is accomplished within a limited timeframe and from existing stock.

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    Hub Van Doorneweg 8
    2171kz Sassenheim
    The Netherlands