LEAX Detmold > Gear Reducers > Rubber and plastics industry
Know-how und Kreativität für Ihre Produktideen

Rubber and plastics industry

Our solutions for the rubber and plastics industry

LEAX Detmold supports the plastics industry‘s success by designing, individually customising and delivering high-quality gear reducers, such as side feeding and degasification facilities, helical cut planetary gear reducers for sophisticated calenders as well as single shaft and double shaft extruder gear reducers, available in synchronised and reverse rotation versions.

We fall back on a more than 70 year old pool of experience in gear reducer manufacture, and our entire team supports your product ideas with its know-how and creativity!


Gear recucers for side feeding and degassing – GB1575 / LB1586

This spur distribution gear reducer may be attached to an extruder in horizontal or vertical orientation. The center distance can vary between 18 and 120 mm, depending on the customer requirements.

Specifications LB1586 – A 49,3 GB1575 – A 23,3 GB1575 – A 18,7
Gear reducer type Spur gear reducer, single-stage Spur gear reducer, single-stage Spur gear reducer, single-stage
Rotation direction co-rotating co-rotating co-rotating
Gear ratio 0,95 0,95 0,95
Center distance 49,3 mm ± 0,02 mm 23,3 mm 18,7 mm
Rated drive torque 2 x 58 Nm 2 x 17,5 Nm 2 x 17,5 Nm
Application factor 1,25 1,25 1,25
Drive speed range 600 – 800 rpm 420 rpm 420 rpm
Lubrication Splash lubrication Splash lubrication Splash lubrication
Oil type ISO – VG 150 ISO – VG 150 ISO – VG 150
Connection on output end Output shafts with sleeve
couplings and union nuts
Output shafts with sleeve couplings Output shafts with sleeve couplings

Helical cut planetary gear reducers – LPG

LEAX Detmold planetary gear reducers are suitable for sophisticated applications, such as being used as the drive system in calenders for the manufacture of transparent panels or optical film. The gears made of high-quality materials and featuring an optimised number of teeth and sensible modification of the profile, are produced in state-of-the-art manufacturing machines. They contribute to the minimal occurrence of surface disturbances and transverse markings. These gear reducers incorporate helical cut planetary stages and special gear ratios, which guarantee unmatched smoothness and an optimal transmission function. LPG gear reducers are available with free drive and output shafts as well as with motor lanterns for IEC or servo motors.

Specifications LPG 16 LPG 25 LPG 40
Rated drive torque 1500 Nm 2750 Nm 4350 Nm
Max. drive speed 3000 rpm 3000 rpm 3000 rpm
Ratio 2-stage 20 – 40 18 – 46 20 – 39
Ratio 3-stage 73 – 231 63 – 299 84 – 305
Ratio 4-stage 265 – 1323 212 – 1952 342 – 2385

Twin shaft extruder

Our extruder gear reducers with two shafts are available in co-rotating or counter-rotating versions, or with a shift to alternate between co-rotating and counter-rotating. Potential fields of application for these gear reducers are, for example, master batch, compounding, direct extrusion and pharmaceutical extrusion

Counter-rotating GB1345, GB1573D, GB1052, GB1571, GB1077B

Specifications GB1345 GB1573D GB1052 GB1571 GB1077B
Center distance (mm) 23 30 59 70 84
Drive torque (Nm) 2 x 100 2 x 475 2 x 1500 2 x 3150 2 x 4800
Output speed (rpm) 400 110 42 120 60
Drive power (kW) 8,4 11,5 15 80 75

Co-rotating GB1345, GB1361, GB1480, GB1392, GB1052D, GB1385, GB1459, GB 1571, GB1077, GB1316

Technische Daten GB1345 GB1361 GB1480 GB1392 GB1052D GB1385 GB1459 GB1571 GB1077 GB1316
Center distance (mm) 23 33,5 33,5 50 59 62,5 62,5 70 84 84
Drive torque (Nm) 2 x 100 2 x 320 2 x 415 2 x 1070 2 x 1500 2 x 2110 2 x 2700 2 x 2300 2 x 3200 2 x 5000
Output speed (rpm) 400 500 400 500 400 500 1000 400 300 400
Drive power (kW) 8,4 33,7 35 118 133 239 607 200 220 430

Single shaft extruder – ED45, ED60, ED90

Compact drives for extruder installations with high power density which is constructed modularly. The motors are connected with the gear reducer input shafts via elastic couplings. It is possible to install motors from various manufacturers.

The process lantern with a connection to the extruder is designed so that the axial powers resulting from the extruder can be absorbed by the process lantern.

Specifications ED45 ED60 ED90
Drive power 2 x 19 kW = 38 kW 2 x 31 kW = 62 kW 4 x 37,5 kW = 150 kW
Number of motors 2 2 4
Gear ratio 13,21 20,039 23,14
Number of gear stages 1 2 2
Potential transmission range   15,7 – 28,4  
Drive speed 2471 rpm
(max. 3000 rpm)
2545 rpm
(max. 3000 rpm)
2545 rpm
(max. 3471 rpm)
Output speed 187 rpm
(max. 227 rpm)
127 rpm
(150 rpm)
110 rpm
(150 rpm)
Rated output torque 1942 Nm 4680 Nm 13000 Nm
Application factor 1,25 1,25 1,25
Max. output torque for start-up 4000 Nm 8000 Nm  
Lubrication Splash lubrication Splash lubrication Forced lubrication
Cooling Convection Internal cooling coil Plate heat exchanger