← Right-angle gearboxes

MRB/MRL Right-Angle Gearboxes

Compare MRB/MRL sizes 42, 60 and 90 at each listed ratio. Check the separate MRB and MRL profiles, output options and motor interface before choosing a configuration.

MRB/MRL Series / Gearboxes

Choose MRB or MRL, then check the exact profile.

MRB and MRL are related spiral-bevel right-angle gearboxes. Mach lists MRB at 1:1 and MRL at 2:1, 3:1, 4:1 and 5:1. The catalog provides separate MRB and MRL profile drawings, so use the drawing that matches your ratio and housing.

Ask about this family View specifications ↓

Mach will confirm your ordering part number, price and availability.

01 / Family specifications

The details that matter.

Ratio and housing

MRB

MRB: 1:1 ratio

Use the MRB profile and its size-specific dimension table. Its body and mounting dimensions differ from MRL.

Catalog sizes: 42 · 60 · 90

MRL

MRL: reduction ratios

Mach lists 2:1, 3:1, 4:1 and 5:1 for MRL. Check its separate profile, including the offset and additional mounting features.

Catalog sizes: 42 · 60 · 90

The catalog describes solid and hollow output options across MRB/MRL, including an extended hollow shaft for a shrink disc. Have Mach confirm the available output, its order code and its exact drawing; the profile previews below do not establish every output variant.

Compare each size at the required ratio.

The catalog publishes one shared MRB/MRL torque table. Each cell below keeps its size and ratio; use the MRB or MRL profile for the selected version.

Nominal output torque by catalog ratio · MRB/MRL ratio allocation follows Mach’s series page · no stage count or continuous-duty basis inferred

Scroll across for all specifications →

MRB/MRL nominal output torque by size and discrete ratio
Catalog model	MRB 1:1 nominal torqueN·m	MRL 2:1 nominal torqueN·m	MRL 3:1 nominal torqueN·m	MRL 4:1 nominal torqueN·m	MRL 5:1 nominal torqueN·m
42View model	10	8	5	3	3
60View model	26	23	21	15	14
90View model	73	69	54	44	43

The catalog does not state the duty, test speed or temperature basis for nominal torque. Confirm the operating point with Mach. Maximum torque is a separate limit. Size codes are catalog size identifiers, not complete ordering part numbers. Each row opens the MRB profile; the separate MRL profile is linked below.

MRB profile and size table MRL profile and size table All MRB/MRL technical data

Model comparison

Full specifications.

Open a model for its details, or select up to three to compare. Review the complete ratio, stage and operating data below.

Use the MRB/MRL family ratings below for efficiency and backlash. The general catalog introduction also describes other designs and options.

Confirm the exact model and application-critical specifications with Mach.

Scroll across to see all models →

MRB/MRL performance specifications. Units appear with each row label.
SpecificationUnits shown below	Model42Compare	Model60Compare	Model90Compare
Full Load Efficiency%	96	96	96
Standard Backlasharcmin	<6	<6	<6
NoisedB(A)	70	72	75
LifetimeHoursPublished product-page value; confirm the service-life conditions for the selected operating cycle.	20,000	20,000	20,000
Max Radial LoadN	600	800	1,700
Max Axial LoadN	700	900	1,500
Nominal Input Speedrpm	4,000	4,000	3,000
Max Input Speedrpm	12,000	8,000	7,000
Torsional stiffnessNm/archmin	1.5	2.4	6.6
Degree of Protection	IP 65	IP 65	IP 65
Nominal Output Torque — Ratio: 1N·m	10	26	73
Nominal Output Torque — Ratio: 2N·m	8	23	69
Nominal Output Torque — Ratio: 3N·m	5	21	54
Nominal Output Torque — Ratio: 4N·m	3	15	44
Nominal Output Torque — Ratio: 5N·m	3	14	43
Max output torque	2 Times of Nominal output torque	2 Times of Nominal output torque	2 Times of Nominal output torque

Additional specifications7 more specifications

MRB/MRL additional specifications. Units appear with each row label.
SpecificationUnits shown below	Model42Compare	Model60Compare	Model90Compare
Weightkg	0.6	1.7	5.4
Operating TemperatureºC	-25 ~ 90	-25 ~ 90	-25 ~ 90
Mass Moments of Inertia — Ratio: 1g-cm²	70	360	1,910
Mass Moments of Inertia — Ratio: 2g-cm²	60	230	1,050
Mass Moments of Inertia — Ratio: 3g-cm²	60	210	940
Mass Moments of Inertia — Ratio: 4g-cm²	60	210	900
Mass Moments of Inertia — Ratio: 5g-cm²	60	200	900

Published model and configuration identifiers are shown as listed by Mach. Options are not complete ordering part numbers. Values with different units or operating conditions remain separate.

Your application

Send Mach the ratio, loads and interfaces.

Provide the application details so Mach can confirm MRB or MRL and the complete configuration.

Ratio and operating point
Send the required input and output speeds, running torque, acceleration and stopping loads, reversing duty, operating cycle and ambient conditions. Identify whether the request is for MRB or MRL.
Shaft, mounting and motor
Include the motor drawing or exact motor model, shaft and pilot dimensions, bolt pattern, output style, available space and required mounting arrangement. Request the drawing for the supplied output and adapter.
Accuracy, loading and assembly
Specify the backlash requirement, radial and axial loads and where they act. Ask Mach for the applicable load limits, lubrication guidance and supplied-hardware mounting instructions.

Ask Mach to confirm your MRB/MRL selection

02 / Drawings