Our gear reducers 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!

Overview of our portfolio

Gear reducers 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.

Typical spur distribution gear reducer for rubber and plastics industry

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

Gear reducers for 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

Specifications	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

Drives for 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