Manufacturer catalogue image · Series illustration

KG helical-bevel gearmotor series

Gear Arrangement: Helical-bevel
Power: Confirm configuration
Voltage: Confirm supply
Speed: Model dependent

Catalogue series · Exact configuration and availability confirmed by the manufacturer.

A 30 mm shaft is not enough to specify a KG37 replacement

The KG37 drawing offers keyed and shrink-disc hollow outputs with the same nominal 30 mm bore but different assembly widths. A solid-shaft version instead uses a 25 mm shaft. Start with the driven-machine connection, then check the mounting and motor-side space before ordering the helical-bevel assembly.

Identify how the existing gearbox connects to the machine

Keyed hollow output K: retain the key and retention arrangement

The KG37 K detail shows a 30 H7 bore, an 8 mm keyway and a 120 mm axial outline. Its retention detail labels an M10 × 25, class 8.8 screw to ISO 4017. Compare the driven shaft, key, engagement and axial retention against the complete drawing; an outer photograph or measured bore alone cannot establish interchangeability.

Shrink-disc hollow output KH: allow a different side envelope

The KH detail also shows a 30 H7 bore, but its axial outline is 146 mm rather than the K version’s 120 mm. The top view places the extra width on the clamping-device side. That 26 mm difference matters next to a guard or bearing support. Confirm assembly and tool access, shaft surface requirements and the selected shrink-disc installation instructions; do not transfer a keyed-shaft fastening procedure to this variant.

Solid output Z: match the coupling, not the hollow-bore dimension

The solid-shaft drawing specifies a 25 k6 shaft, 50 mm extension and 8 mm key width. Its connection therefore differs from the 30 mm hollow versions even within the same KG37 housing size. Record which side carries the shaft and check the coupling bore, engagement and clearance. KV is a separate DIN 5480 spline option and likewise needs its mating-spline specification.

Two checks beyond the output connection

The motor changes the available space behind the gearbox	The KG37 outline’s four-pole motor table gives L1 = 320 mm and motor diameter G = 175 mm for frame 80, covering 0.55 and 0.75 kW entries. At frame 90L, 1.5 kW, it gives L1 = 367 mm and G = 195 mm. L1 is the motor-side dimension drawn from the gearbox interface, not the entire unit length. The catalogue explicitly permits L1 to vary, so obtain the finished assembly drawing before fixing the guard or support.
A physically fitting unit still needs its exact reduction selected	For one KG37 example, the 0.75 kW four-pole row at ratio 36.16 lists 40.1 rpm output, 175 N·m and FB 1.12, using 1450 rpm input. That is a defined selection point, not a rating for every KG37. Include the old ratio, required output speed, load torque and start-stop duty alongside the shaft and mounting measurements. A motor-power match alone does not preserve machine speed or the gearbox’s duty margin.

The motor changes the available space behind the gearbox

The KG37 outline’s four-pole motor table gives L1 = 320 mm and motor diameter G = 175 mm for frame 80, covering 0.55 and 0.75 kW entries. At frame 90L, 1.5 kW, it gives L1 = 367 mm and G = 195 mm. L1 is the motor-side dimension drawn from the gearbox interface, not the entire unit length. The catalogue explicitly permits L1 to vary, so obtain the finished assembly drawing before fixing the guard or support.

A physically fitting unit still needs its exact reduction selected

For one KG37 example, the 0.75 kW four-pole row at ratio 36.16 lists 40.1 rpm output, 175 N·m and FB 1.12, using 1450 rpm input. That is a defined selection point, not a rating for every KG37. Include the old ratio, required output speed, load torque and start-stop duty alongside the shaft and mounting measurements. A motor-power match alone does not preserve machine speed or the gearbox’s duty margin.

CATALOGUE OVERVIEW

About this motor series

GPG KG helical-bevel gearmotors combine a right-angle drive with several mounting and output connections. The KG37 drawings distinguish a 25 mm solid shaft from 30 mm keyed and shrink-disc hollow outputs, with different side envelopes. Check the shaft interface, motor-side dimensions and exact reduction together when replacing an existing assembly.

Model / series reference: KG

Published specifications

Specifications describe a series range; confirm which ratings apply together to the quoted model.

Gear Arrangement: Helical-bevel
Power: Confirm configuration
Voltage: Confirm supply
Speed: Model dependent
Selection: Specify output torque, speed and service factor
Catalogue Type: Product series

Confirm mounting and shaft dimensions against the drawing for the quoted configuration.

KG helical-bevel gearmotor series

A 30 mm shaft is not enough to specify a KG37 replacement

Identify how the existing gearbox connects to the machine

Two checks beyond the output connection

About this motor series

Published specifications

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