Attachment Milling Machines
Rotation Units
KRM Series, eight rotation modules from KRM 20 (138 kg, 2-tonne carrier, 6,000 Nm) up to KRM 80 (2,068 kg, 70-tonne carrier, 350,000 Nm). Continuous 360° stepless rotation cuts working time by up to 50% on profile-heavy projects.
- Models in range
- 8
- Carrier class
- 2 - 70 t
- Holding torque up to
- 350,000 Nm
- Time saving
- Up to 50%
KRM Series, stepless rotation modules
Eight sizes, holding torque to 350,000 Nm, continuous 360° rotation that cuts cycle time by up to 50%.
Kemroc's KRM rotation units add continuous, stepless 360° rotation to cutting heads, drum cutters and other attachments. Eight models cover excavators from 2 to 70 tonnes, with maximum holding torque from 6,000 Nm (KRM 20) up to 350,000 Nm (KRM 80). Built around durable worm-gear drives and heavy-duty bearings, with in-house designed oil distributors maintaining proper hydraulic flow to the downstream attachment across the full rotation range. Distributed in Australia by Monty Products.
High Holding Torque
Continuous, stepless rotation with holding torque up to 350,000 Nm, precise positioning under cutting load without slip or backlash.
Worm-Gear Drive
Durable worm gear drive and heavy-duty bearings deliver reliable service in tough conditions. Low maintenance, long life.
In-House Oil Distributors
Kemroc-designed oil distributors maintain proper fluid flow rates to the downstream attachment across the full rotation range, no flow drop at extreme angles.
Range Spectrum
Service weight (kg)
Where each model sits across the range. Lighter on the left, heavier on the right.
Where It Works
Common applications across Australian construction, demolition and civil sites.
Trenching
Pair with chain cutters and trenchers to follow non-linear trench paths without repositioning the carrier.
Tunnelling
Stepless angle adjustment for face cutting and profile work in confined drift and tunnel environments.
Demolition
Position cutting heads at any angle for selective concrete and structural demolition, every cut hits the right plane.
Pipeline construction
Trench profile work for pipeline routes that don't run straight, curves and angles cut from the same setup.
Surface profiling
Pair with universal cutter heads for horizontal, vertical and inclined surfaces from one carrier position.
Time-efficient setup
Single-axis attachment positioning replaces multiple carrier repositionings, material progress per shift goes up by up to 50%.
The Range in Action
A featured shot plus supporting views, taken on Australian sites.
KRM SeriesContinuous 360° stepless rotation
KRM SeriesWorm gear drive with heavy-duty bearings
KRM SeriesOffset trenching, angles a fixed mount can't reach
Technical Specifications
Scroll horizontally on smaller screens. The measure column stays in view.
| Measure | KRM 20 | KRM 30 | KRM 35 | KRM 40 | KRM 50 | KRM 60 | KRM 70 | KRM 80 |
|---|---|---|---|---|---|---|---|---|
| Carrier weight (t) | 2-6 | 5-12 | 7-15 | 12-18 | 19-27 | 25-40 | 30-50 | 50-70 |
| Service weight (kg) | 138 | 335 | 387 | 493 | 629 | 910 | 1,028 | 2,068 |
| Max. holding torque (Nm) | 6,000 | 9,000 | 18,000 | 45,000 | 95,000 | 200,000 | 270,000 | 350,000 |
| Max. oil flow (L/min) | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
| Max. operating pressure (bar) | 160 | 160 | 160 | 160 | 160 | 160 | 160 | 160 |
| Diameter (mm) | 240 | 370 | 370 | 460 | 570 | 600 | 700 | 900 |
Indicative figures from Kemroc. All KRM units operate at identical 40 L/min oil flow and 160 bar maximum pressure, sizing is by carrier weight and required holding torque.
Get in Touch
Contact our team for Rotation Units specifications, pricing and availability across Australia.