TWIN DISC / Gearboxes

Twin Disc RM 120D · RM 120S

RM 120D · RM 120S: Twin Disc gearbox for land-based industrial applications. Torque, speed and ratio depend on the version documented on this page.

Covered designations:RM 120DRM 120S

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TWIN DISC RM 120D

Interactive 3D exploded view

No published 3D CAD

We did not find an official CAD that can be published for this configuration. The technical page remains available: send us photos of the identification plate and part so we can identify it without assigning unverified codes.

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The model and serial number are different. You’ll find the serial number on the Twin Disc unit’s identification plate; we use it to check that a part fits your particular unit.

Verified technical data

Model: RM 120D · RM 120S
Family: RM
Indicative power without oil cooling: 85 kW
Direction of rotation: Opposite input and output rotation

Versions documented in the catalogue

RM 120D

Indicative power without oil cooling: 85 kW
Direction of rotation: Opposite input and output rotation
Performance by ratio: i 0.5 · T_in 1000 Nm · n_in 2000 rpm
Performance by ratio: i 1.02 · T_in 880 Nm · n_in 2500 rpm
Performance by ratio: i 1.7 · T_in 740 Nm · n_in 2500 rpm
Performance by ratio: i 2 · T_in 700 Nm · n_in 2500 rpm
Performance by ratio: i 3 · T_in 510 Nm · n_in 2500 rpm
Performance by ratio: i 3.55 · T_in 450 Nm · n_in 2500 rpm

Source page: 3, 8, 9, 10

RM 120S

Indicative power without oil cooling: 68 kW
Direction of rotation: Same input and output rotation through idler gear
Performance by ratio: i 0.67 · T_in 830 Nm · n_in 2000 rpm
Performance by ratio: i 1.5 · T_in 500 Nm · n_in 2500 rpm
Performance by ratio: i 2 · T_in 480 Nm · n_in 2500 rpm
Performance by ratio: i 2.6 · T_in 480 Nm · n_in 2500 rpm
Performance by ratio: i 2.8 · T_in 480 Nm · n_in 2500 rpm
Performance by ratio: i 3 · T_in 480 Nm · n_in 2500 rpm

Source page: 3, 8, 9, 10

These values apply to the configuration shown in the document. We check your machine’s details and availability before confirming the replacement part.

Technical documentation

Manufacturer source ↗

Source page: 3, 8, 9, 10

Official Twin Disc family page ↗

Representative image of the product family; check the model on the identification plate.

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What to send us for a RM 120D part

Start with a clear photo of the identification plate and one of the part. Include the part number if you know it, and describe the problem. Follow the manufacturer’s documentation and use qualified personnel for disassembly.

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