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MPS-42 Precision Planetary Gearbox

Review MPS-42 ratio-specific nominal torque, single- and double-stage backlash classes and weights. Open the shared MPS catalog and applicable drawing references, then confirm the motor interface and duty with Mach.

MPS-42 / Gearboxes

Select the ratio and stage for MPS-42.

MPS-42 is one size in the MPS precision planetary family. The shared profile shows square mounting flanges and a projecting keyed output shaft. The catalog lists nominal input speed of 4,000 rpm for this size; check the actual speed and duty with Mach alongside the required torque.

Ask about this family View specifications ↓

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

01 / Family specifications

The details that matter.

MPS size and configuration

1 stage

Single-stage configurations

Choose the required ratio and backlash class, then confirm the motor interface for this size.

Catalog ratios: 3:1 · 4:1 · 5:1 · 7:1 · 9:1 · 10:1
Standard backlash: <12 arcmin
Precision backlash: <6 arcmin
Listed gearbox weight: 0.5 kg

2 stages

Double-stage configurations

Choose the required ratio and backlash class, then confirm the motor interface for this size.

Catalog ratios: 12:1 · 15:1 · 16:1 · 20:1 · 25:1 · 30:1 · 40:1 · 50:1 · 70:1 · 100:1
Standard backlash: <15 arcmin
Precision backlash: <8 arcmin
Listed gearbox weight: 0.9 kg

Standard and precision backlash are separate catalog classes. Confirm the class, motor interface and current drawing when requesting a configuration.

Single-stage torque by listed ratio.

Each row refers to size MPS-42. The ratio is a configuration choice; the repeated size code is not a complete ordering part number.

Catalog nominal output torque · Single stage · Ratio-specific values; application duty and operating speed require confirmation

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MPS-42 single-stage nominal output torque by catalog ratio
Catalog model	Catalog ratio	Nominal output torqueN·m
MPS-42Current model	3:1	13
MPS-42Current model	4:1	18
MPS-42Current model	5:1	16
MPS-42Current model	7:1	10
MPS-42Current model	9:1	7
MPS-42Current model	10:1	6

The MPS-42 stage 1 image is a reference drawing without a title block or ratio list. Confirm the ratio and motor interface with Mach. Torque values are not maximum or peak ratings.

MPS-42 stage 1 drawing image (confirm ratio and interface)

Double-stage torque by listed ratio.

Each row refers to size MPS-42. The ratio is a configuration choice; the repeated size code is not a complete ordering part number.

Catalog nominal output torque · Double stage · Ratio-specific values; application duty and operating speed require confirmation

Scroll across for all specifications →

MPS-42 double-stage nominal output torque by catalog ratio
Catalog model	Catalog ratio	Nominal output torqueN·m
MPS-42Current model	12:1	20
MPS-42Current model	15:1	20
MPS-42Current model	16:1	26
MPS-42Current model	20:1	26
MPS-42Current model	25:1	16
MPS-42Current model	30:1	18
MPS-42Current model	40:1	24
MPS-42Current model	50:1	16
MPS-42Current model	70:1	10
MPS-42Current model	100:1	6

The MPS-42 stage 2 image is a reference drawing without a title block or ratio list. Confirm the ratio and motor interface with Mach. Torque values are not maximum or peak ratings.

MPS-42 stage 2 drawing image (confirm ratio and interface)

Full specifications

Full specifications.

Review the published specifications below. Keep the size, stage, ratio and operating conditions with each value.

Use nominal output torque for selection. Maximum torque is a separate limit; confirm the speed, duty and selected ratio with Mach.

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

Performance Data

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MPS-42 published Performance Data
Specification	Units	Stage	Measurement
Full Load Efficiency	%	1	96
Full Load Efficiency	%	2	92
Standard Backlash	Arcmin	1	<12
Standard Backlash	Arcmin	2	<15
Precision Backlash	Arcmin	1	<6
Precision Backlash	Arcmin	2	<8
Weight	kg	1	0.5
Weight	kg	2	0.9
Noise	dB (A)	58
Lifetime	hr	20,000
Max Radial Load	N	300
Max Axial Load	N	110
Nominal Input Speed	RPM	4,000
Max Input Speed	RPM	12,000
Torsional Stiffness	Nm/Arcmin	0.9
Operating Temperature	ºC	-25 ~ 90
Degree of Protection	IP 64
Lubrication	Life Lubrication
Mounting Direction	Any
Limited Tightening Clamp Torque	in-lbs / Nm	14.75 / 1.66

Torque Data

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MPS-42 published Torque Data
Specification	Stages	Ratio	Output
Nominal Output Torque (Nm)	1	3	13
		4	18
		5	16
		7	10
		9	7
		10	6
	2	12	20
		15	20
		16	26
		20	26
		25	16
		30	18
		40	24
		50	16
		70	10
		100	6
Maximum Output Torque (Nm)	2.5 Times Nominal Output Torque

Your application

Send the details for your MPS-42 configuration.

Include the target ratio, motor datasheet and load profile so Mach can check the configuration and the correct drawing.

Ratio and speed
Required ratio or output speed, motor input speed and intended stage count
Torque and duty
Continuous and peak output torque, acceleration, starts and stops, and duty cycle
Motor and mechanical fit
Motor shaft, pilot and flange dimensions; output coupling; available mounting space; and the drawing you are using
Precision and loading
Required backlash class, radial and axial loads with their application points, and operating environment
Assembly confirmation
Motor-to-gearbox clamp and fastener details so Mach can confirm the applicable mounting and tightening requirements

Discuss your MPS-42 application

Replacing a gearbox? Include its full part number, drawing and motor datasheet.

02 / Drawing

A closer look.

Review the mounting, shaft and motor connection in the catalog.

Open larger

Shared MPS profile and size tablePDF · Opens in a new tab

03 / Downloads

Documents & references.

Shared MPS profile and size table

Shared MPS profile and size table. Open the dimensional drawing PDF.

PDF

MPS Series catalog

Shared technical data for MPS sizes 42, 60 and 90. The profile page contains a MPS-42 dimension column; confirm its applicability to your ratio and interface.

PDF

MPS-42 stage 1 drawing image

Original reference image linked from the MPS-42 page. Confirm ratio, motor interface and current approved drawing; the image has no title block.

PNG

MPS-42 stage 2 drawing image

Original reference image linked from the MPS-42 page. Confirm ratio, motor interface and current approved drawing; the image has no title block.

PNG

Gear reducer mounting instructions

General motor-mounting reference. Ask Mach to confirm the coupling, fastener and clamp-tightening requirements for the selected assembly before installation.

PDF

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