Ballscrew Guys > Miyano

Ballscrew Guys are specialists in on-site repair and refurbishment of Miyano linear motion systems including ball screw assemblies and linear way guides.

Please contact us to troubleshoot your issue and follow up with a service request with travel and work estimates. See our flat rate specials and inquire about travel splits if your down time is flexible.

Fast response

We come to you to perform all services, typically within two weeks and completed the same day

Low cost

Our refurbishment services are cheaper than buying new or sending out for a regrind

Minimal downtime

We have serviced and installed hundreds of ball screws at manufacturer's facilities

Ballscrew Repair Services

Ballscrew Guys provide low cost, fast-response, on-site ball screw repair and refurbishment services for your Miyano . Call (877) 768-4064 for immediate consultation.

Ball Screw Repair and Refurbishment
Ball Screw Installation and Removal
Ball Screw End Bearing Replacement

Linear Way Guide Rail Installation
Linear Way Guide Block Repair and Refurbishment

Clean, Flush, and Lube Service
For mail in service see: Richardson Precision Inc

Gallery

Miyano Mill

Miyano MTV T310 Vertical Mill Center.

Miyano MTV T310 Overview

Here, the X and Y-Axis ball screws were shown on a Miyano MTV T310 Vertical Mill Center, similar to the T410 design as well. The protective covers were disconnected and slid back to access the ball nuts. What is interesting about the Miyano ball screw designs is that the ball screw shafts themselves are only fixed by angular contact bearings on the motor side of the screw. The non-drive side of the ball screw shaft is actually only held in place by a rather simple radial bearing, often starved of lubrication. This ball screw setup is good for a Z-Axis on machines that do not utilize violent machine processes because the light support on the outboard end can often translate into visual chatter marks on mill cuts. Often, these cut blemishes are difficult to measure and qualify, but they can be visually seen. Vertical Mill Centers and Tap and Drill CNC machines like the TSV-21 and TSV-31 have similar issues as well. Still, the Miyanos use quality Japanese KOYO ball screw assemblies, which are most often rebuildable in the machine.

Miyano MTV T310 X-Axis

This is the X-Axis to a Miyano MTV T310 Vertical Mill Center. It is similar to the MTC T410 and the TSV Tap and Drill Centers, like the TSV-21 and the TSV-31. This one used single ball nut ball screw assemblies made by KOYO in Japan. These ball screws were fairly straightforward in their repair and refurbishment. The main issues found with them were looseness after being run with insufficient lubrication.

Miyano MTV T310 Y-Axis

This is the Y-Axis to a Miyano MTV T310 Vertical Mill Center. It is similar to the MTC T410 and the TSV Tap and Drill Centers, like the TSV-21 and the TSV-31. Like the X-Axis, this one used single ball nut ball screw assemblies made by KOYO in Japan. The main issues found with them were looseness after being run with insufficient lubrication. If noticed, there was a yellow/brown haze on the assembly. This was dried cutting fluid. It was found that on the Y-Axis of these machines, this dried fluid buildup often acted as an adhesive, holding cut debris to the ball screw shaft, which got sucked up into the ball nut. This, in turn, caused additional drag torque and resistance in spinning. This, in turn, caused the servo motor to do extra work. If excess servo error and overheating alarms were noticed on the Y-Axis, this issue could very well have been the culprit.

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