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MKS Series

MKS precision planetary gearboxes with single- and double-stage catalog configurations. Compare sizes at a specified ratio, open the matching drawings, and confirm the motor and load requirements with Mach.

MKS Series / Gearboxes

Match the ratio to the size.

The MKS catalog lists sizes 060, 075, 100, 140, 180, 210, 240. Choose the ratio and stage count before comparing the applicable performance and dimensional data.

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 configuration

One stage

Single-stage ratios

Start with a listed ratio, then check the performance row for the required size.

Catalog ratios: 3:1 · 4:1 · 5:1 · 6:1 · 7:1 · 8:1 · 9:1 · 10:1

Two stages

Double-stage ratios

Use the double-stage performance and drawing information for the selected ratio.

Catalog ratios: 15:1 · 16:1 · 20:1 · 25:1 · 28:1 · 30:1 · 35:1 · 40:1 · 45:1 · 50:1 · 60:1 · 70:1 · 80:1 · 90:1 · 100:1

Ratios are discrete catalog configurations. Confirm the required size, ratio and motor interface with Mach.

Compare a defined configuration.

The comparison below uses the same 7:1, single-stage ratio for each catalog size. It is a starting point for comparing size and nominal torque; other ratios may have different ratings. Size designations are not complete ordering part numbers.

Nominal ratings at 7:1 · Single stage

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MKS size comparison · 7:1 ratio · single stage
Catalog model	Nominal output torqueN·m	Nominal input speed (maximum average)rpm
MKS-060View model	27	3,000
MKS-075View model	75	3,000
MKS-100View model	180	3,000
MKS-140View model	360	2,000
MKS-180View model	750	1,500
MKS-210View model	1,500	1,000
MKS-240View model	2,400	1,000

All rows are for a 7:1 ratio, single-stage configuration. Nominal output torque is tied to the listed nominal input speed and the catalog’s 20,000-hour service-life condition. The catalog defines nominal input speed as maximum average input speed. These are not maximum starting/stopping or emergency-stop torque ratings. Have Mach check the exact ratio and operating cycle before selection.

Ordering structure and size-specific performance tables Motor-adapter dimensions for MKS sizes

Your application

Send Mach the application details.

Share the load, motion and mechanical-interface requirements so Mach can confirm a suitable configuration.

Operating cycle
Send the required ratio or input/output speeds, nominal running torque, starting and stopping loads, and any emergency-stop load. Include the operating cycle and required service life.
Motor interface
Send the motor model and its flange, pilot, bolt-pattern and shaft drawing. Catalog outline lengths vary with the motor; the drawings note that a bushing adapts the motor shaft. Mach must confirm the exact interface.
Output and mounting
The MKS ordering table lists K for a keyed shaft and S for a smooth shaft. Specify the required shaft style and mounting dimensions; a size designation alone is not a completed ordering code.
Shaft loads and available space
Provide radial and axial loads, where each load acts, and the available installation envelope. The catalog distinguishes permitted shaft loads from maximum loads; the load conditions must match the application.

Ask Mach to confirm a selection

Replacing a gearbox? Send its full part number and the motor, output and mounting drawings for a dimensional review.

02 / Drawing