Knodler / Knödler industrial gearboxes and drive systems

Selection and supply of Knodler / Knödler drive equipment: CMG compact geared motors, FZ extruder gearboxes, KS bevel units, VG multi-shaft transfer gearboxes and ZS linear actuators. Engineering support by SpareX.

Knodler / Knödler CMG compact extruder geared motors

Compact Knodler CMG geared motors combine heavy-duty gearing with high-torque electric motors in a rigid housing. Engineered for restricted footprints, they feature built-in liquid cooling circuits to power demanding polymer extruders, heavy agitators and industrial compounding lines.

Multi-motor powertrain architecture scalable across broad industrial power bands
Integrated liquid cooling circuit sustaining continuous heavy-duty processing cycles
Universal mounting flanges matching global extrusion barrels and polymer mixers
Embedded thermal probes and monitoring sensors for comprehensive operational feedback

Knodler / Knödler heavy-duty extruder gearboxes series FZ

Specialized Knodler FZ parallel-shaft gearboxes are built to drive single-screw polymer and rubber extruders. Their robust housing incorporates heavy-duty spherical roller thrust bearings engineered to absorb tremendous axial melt pressure generated during plastics processing.

Frame sizes from FZ 50 to FZ 20000 delivering immense output torque ratings
Heavy-duty thrust bearing assembly absorbing extreme continuous screw back-pressure
Hollow output shafts with internal splines per DIN 5480 for reliable screw coupling
Choice between solid input shaft extensions and standard IEC motor connection bells

Knodler / Knödler industrial helical and bevel-helical gear units series KS

Modular Knodler FZ parallel and KS bevel-helical gearboxes deliver reliable torque conversion for heavy processing plant machinery. Precision carburized and ground helical gearing ensures quiet running, minimal dynamic vibration and optimum mechanical energy efficiency.

Broad size spectrum from KS 50 to KS 12000 supporting diverse multi-stage ratios
Precision ground helical teeth profile minimizing mechanical running temperature
Hollow output shaft designs with shrink discs as well as keyed solid shaft versions
Unified IEC adapter housings for three-phase standard and servo motor connections

Knodler / Knödler multi-shaft distribution transfer gearboxes series VG

Specialized Knodler VG distributor gearboxes provide synchronized power splitting for multi-roll metal leveling, rolling and sheet processing machinery. They divide incoming drive energy from single or multiple motors across a cluster of parallel output shafts reliably.

Synchronized drive distribution across 9 to 23 output shafts with custom spacing
Rigid split housing paired with forced circulating oil lubrication for all bearings
Seamless combination with primary reduction stages from standard product lines
Heavy-duty mechanical design engineered for demanding steel and sheet metal plants

Knodler / Knödler electro-mechanical linear drive actuators series ZS

Engineered linear drive units Knodler series ZS, ZS-E and ZS-C serve as primary motion mechanisms in all-electric and hybrid plastics injection molding machines. They deliver accurate axial thrust for screw injection strokes, mold clamping and finished product ejection.

High-precision ball screws and planetary roller screws generating huge linear forces
Direct servo motor mounting providing dynamic acceleration and sub-millimeter control
Integrated precision guide rails with absolute position encoders for CNC feedback
Protective bellow covers and centralized automatic lubrication distribution ports

Knodler / Knödler replacement parts and overhaul components

We supply mechanical components and overhaul spare packages for Knodler industrial gearboxes using the model identification nameplate. Offerings include heavy extruder thrust bearings, ground helical gear pairs, spline shafts, radial shaft seals and oil circulation pumps.

Heavy-duty spherical and cylindrical thrust roller bearings for FZ and CMG lines
Carburized precision ground helical gears and mating pinion shafts for rebuilds
High-temperature FKM fluoroelastomer shaft seal rings and labyrinth seal rings
Flange-mounted lubrication pumps, fine oil filter elements and flexible IEC couplings

Design principles and liquid cooling of CMG geared motors

Knodler CMG geared motor series features a patented unified layout where precision gear trains and electric motors are integrated within one rigid body.

Initially developed for plastics processing machinery, CMG drives operate across industrial mixers, reactors, ball mills and polymer shredders demanding high output torques within limited machinery footprints.

An advanced liquid cooling system is built directly into the drive body, dissipating thermal energy from motor stator windings and gear meshing zones. This thermal stabilization prevents lubricant breakdown during uninterrupted high-load operation.

The construction accommodates vibration probes and thermal sensors for continuous condition monitoring.

Selecting FZ extruder gearboxes and thrust bearing engineering

Heavy-duty Knodler FZ parallel gear units are engineered for demanding polymer and rubber extrusion systems. The primary function of an extrusion drive is absorbing the tremendous axial load generated by the rotating screw under melt pressures reaching hundreds of bars.

In FZ 50 to FZ 20000 gear units, this force is borne by a heavy-duty spherical roller thrust assembly.

The hollow output shaft features internal involute splines according to DIN 5480, delivering dependable torque transmission to the extruder screw shank without key fatigue.

Input interfaces offer a choice between solid shaft extensions for flexible couplings and standard IEC motor bell housings with integrated spider couplings.

Installation, shaft alignment and lubrication intervals for KS and FZ units

Universal Knodler FZ parallel and KS bevel-helical gearboxes utilize a modular engineering architecture. All gear wheels are produced from alloyed carburizing steel grades with hardening and precision tooth grinding.

Accurate gear mesh reduces dynamic vibration, lowers acoustic emissions and delivers high mechanical transmission efficiency under heavy cyclic loads.

For driven shaft mounting, hollow shaft configurations with external shrink discs provide rigid friction locking without backlash.

Depending on operational thermal loads, cooling methods include internal cooling coils located in the oil sump or external circulation units equipped with plate heat exchangers and high-efficiency filtration elements.

Multi-shaft VG distributor gearboxes in metal processing lines

Specialized Knodler VG distributor gear units operate in steel processing plants, rolling mills and sheet metal slitting lines.

Their primary role is synchronized torque distribution from single or dual electric drive motors to multiple parallel output shafts (from 9 up to 23 shafts within one rigid frame) running at identical angular velocities.

Center-to-center distances and shaft torque capacities are engineered to match individual roll stand dimensions. Rigid split gear housings prevent shaft deflection under heavy operational loads.

The lubrication network incorporates pressurized oil delivery to every gear mesh and bearing assembly with continuous flow and pressure differential tracking.

Electro-mechanical ZS linear actuators for injection molding machines

Knodler ZS, ZS-E and ZS-C linear drive units replace conventional hydraulic cylinders in modern electric and hybrid plastics injection molding machines.

They govern injection carriage motion, screw plasticizing rotation and linear stroke, as well as toggle mold clamping mechanisms and finished product ejectors.

These linear units utilize precision ground ball screws and planetary roller screws designed for severe cyclic loads.

Direct servo motor mounting ensures sub-millimeter positioning accuracy, smooth velocity transitions during mold closing and highly repeatable injection velocity profiles without fluid leakages.

Component identification via nameplate data and overhaul procedures

Accurate spare parts selection and overhaul planning for Knodler gear units rely upon data stamped on the original factory metal nameplate.

The plate details exact gear frame designation, serial number, gear ratio and mounting orientation, allowing unequivocal specification of internal bearings, ground gear sets and seal rings.

Routine scheduled maintenance prioritizes replacement of radial shaft seal rings and oil filter cartridges. During comprehensive overhauls of extruder gearboxes, technicians inspect screw thrust bearing raceways, verify tooth contact patterns and measure hollow shaft internal spline geometry.

Knodler / Knödler and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Knodler / Knödler and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.