MH(T)-SERIES SIGMA-5 POSITIONER MANUAL MH(T)185, MH(T)555, or MH(T)1655 TOOLING or MOTOMOUNT (R9)

October 19, 2026 19:42
Updated

1.1 System Overview

1.2 System Layout

1.2.1 System Description

1.2.1.1 Drive Assembly with MotoMount

1.2.1.2 Headstock Assembly

1.2.1.3 Positioner Assembly (Headstock and Tailstock)

1.3 Reference Documentation

1.4 YASKAWA Representative Information

2.1 For Your Safety

2.2 Notes for Safe Operation

2.3 Installation and Wiring Safety

2.4 Ensure Safety

2.5 Operation Safety

2.6 Maintenance Safety

3 Equipment Description

3.1 General Information

3.2 MH(T)-Series SIGMA-5 Positioner Assembly

3.2.1 MH-Series SIGMA-5 Positioner – Specifications

3.3 MotoMount™

4.1 Required Materials

4.1.1 Customer-Supplied Items

4.1.2 List of Tools

4.2 Installing the MH(T)-Series SIGMA-5 Positioner

4.2.1 Site Preparation

4.2.1.1 Location

4.2.2 Unpacking

4.2.3 Headstock Assembly Mounting Hole Pattern – MH185/555/1655

4.2.4 Column Assembly Mounting

4.2.4.1 Hole Patterns

4.2.4.2 Installing the Headstock Column Assembly

4.2.4.3 Leveling the Headstock

4.2.5 Connecting the Cables

4.2.5.1 Connection to Controller

4.2.5.2 Ground Cables

4.2.6 Home Position

4.3 Tailstock Column Installation

4.3.1 Tailstock Installation

4.3.2 Leveling the Tailstock

4.3.2.1 Leveling Procedures

4.3.3 Tooling Fixture Installation (Initial)

4.3.4 Tooling Fixture Installation (Regular)

4.3.5 Final Alignment Check

4.3.5.1 Horizontal Alignment

4.3.6 Tooling Fixture Removal

4.4 MotoMount Installation

4.4.1 Preparation

4.4.2 Unpack and Assemble

4.4.2.1 Installing Fixture Dowel Pins

4.4.3 Securing MotoMount Drive Components onto Faceplate

4.4.4 Retrofitting Tailstock Assembly

4.5 Conducting a Safety/Operation Check

5 Tooling Recommendations

5.1 Headstock Only – Tooling Recommendations

5.2 Customer-Supplied Tooling Fixture

5.2.1 Recommendations

5.2.2 Mounting Holes – Faceplate

5.3 Headstock/Tailstock with MotoMount

5.3.1 Customer-Supplied Tooling Fixtures

5.3.2 Multiple Tooling Fixtures

5.3.3 Specifications

5.3.3.1 Parallelism

5.3.3.2 Hole Pattern on MotoMount

5.3.3.3 Headstock Flange Specifications

5.3.4 Tailstock Flange Specifications

6.1 Spare Parts

6.3 Weld Ground Brush Replacement

6.3.2 MH555 and MH1655

6.4 Reset Headstock To Home Position

6.4.2 MH-Series SIGMA-5 Positioner

6.4.3 MotoMount

6.5 Grease Replenishment/Exchange

6.5.1 Headstock

6.5.2 Tailstock Tooling Zerk Fittings

6.6 Troubleshooting

6.6.1 MH-Series SIGMA-5 Positioner

6.6.2 MotoMount

Appendix A Illustrated Parts List

A.1 Introduction

A.1.1 Areas of the Illustrated Parts List

A.2 Illustrated Part List

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