Hydraulic Motors

BM Series — Orbital Hydraulic Motors

BM Series orbital hydraulic motors provide compact low-speed high-torque drive options for mobile, agricultural, construction and industrial equipment.

Focus: Compact size, speed range and output shaft configuration
Engineering boundary: Catalog values are preliminary references; final duty, pressure and interface require JST engineering confirmation.

Product Overview

Series capability and selection context

BM1, BM2, BM5 and BM6 are internal model choices within one BM Series; they are not separate top-level product series.

Compact orbital motor layout

BM provides one compact orbital-motor platform with internal BM1, BM2, BM5 and BM6 model choices.

Flexible shaft and flange choices

Shaft, flange, port and drain arrangements are selected against the equipment and hydraulic circuit.

Good fit for small rotary drives

Suitable for conveyors, augers, reels, cutters and compact auxiliary hydraulic drives.

Technical Data

Verified series specifications

Product Type	Orbital hydraulic motor platform
Output Characteristic	Compact low-speed high-torque drive
Displacement	50-985 mL/rev across BM1, BM2, BM5 and BM6; preliminary catalog reference
Operating Pressure	Confirm by selected model, pressure, flow and duty
Shaft Options	Confirm for the selected model and interface
Mounting	Confirm for the selected model and interface
Applications	Agricultural, mobile, construction and industrial auxiliary drives

Catalog Reference

Catalog model references

Catalog values are preliminary references; final duty, pressure and interface require JST engineering confirmation.

Filter model group

Showing all 4 models

Model group	Displacement	Verified catalog data	Source
BM1	50–200 mL/rev	Rated torque: 78–280 N·m Catalog speed: Up to 870 r/min	Catalog p.39
BM2	80–400 mL/rev	Rated torque: 150–435 N·m Catalog speed: Up to 600 r/min	Catalog p.41
BM5	80–400 mL/rev	Rated torque: 235–781 N·m Catalog speed: Up to 799 r/min	Catalog p.44
BM6	195–985 mL/rev	Rated torque: 575–1685 N·m Catalog speed: Up to 775 r/min	Catalog p.47

Open hydraulic motor catalog

Applications

Typical applications

Agricultural machinery: seeders, sprayers, mower decks, augers, harvesters and feed systems.
Construction attachments: sweepers, trenchers, compact drilling attachments and small rotary tools.
Material handling: conveyors, rollers, turntables, reels and indexing systems.
Marine and fishing equipment: net haulers, small capstans and auxiliary deck drives.
Forestry and utility machines: brush cutters, tensioners, cable reels and small pulling devices.
Industrial hydraulic systems: compact rotary drives where electric motors are difficult to install.

Selection Guide

Information used for preliminary selection

Start with required torque, speed, pressure, flow and duty cycle.
Then confirm the BM model choice, displacement, shaft, flange, ports and drain arrangement.
Final configuration requires duty, pressure and interface confirmation.

Engineering Notes

Series-specific review points

Catalog model choices: BM1, BM2, BM5 and BM6.
Preliminary catalog displacement references span 50-985 mL/rev across the platform.
BM5 is a disc-valve choice; BM6 has dual-bearing radial-load support.
Shaft, flange, port, drain and duty limits must be checked for the selected configuration.

Catalog values are preliminary references; final duty, pressure and interface require JST engineering confirmation.

Technical Support