Ballscrew Guys > Giddings-Lewis

Ballscrew Guys are specialists in on-site repair and refurbishment of Giddings & Lewis Machining Center 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.

Servicing ball screw on Giddings & Lewis.

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

On Site Ball Screw Service available 24/7, 7 days a week including holidays. Servicing Giddings & Lewis Boring and Milling Center machine tools

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

Giddings & Lewis G50-T Horizontal Boring Mill

CNC retrofit: G&L boring mill upgrade.

Photos from a FANUC controller retrofit of a Giddings & Lewis G50-T CNC table type horizontal boring mill. Here you can see the covers are removed. Ballscrew Guys have more than quite a few G&L ball screw refurbishment under our belt. This particular one was a challenge, as we rebuilt the vertical-Axis in place. This required use of ladders and a scissor lift.

Heavy-duty ball screw service on CNC.

Vertical-Axis ball screw service on a Giddings & Lewis G50T CNC table type horizontal boring mill. Notice it is a heavy-duty machine center type split nut ball nut. It has an upper and lower half connected together by a spacer shim. This shim, along with the proper sized balls, is what maintains the preload. If the ball screw assembly no longer has adequate preload, the lack of drag torque is looseness. On a vertical-Axis on smaller machines, gravity would assist in helping this axis keep position. But on a monster boring mill like this, it would wiggle. One of the primary causes of wearing out the vertical-Axis of these machines is when the counterbalance system for the unit is not operating properly. Every time we seem to service a vertical-Axis on machines this size, there is almost always a counterbalance and lubrication delivery issue. On this ball nut you can see that it has a rather unique ball return tube design.

Servicing ball screw on Giddings & Lewis.

Vertical-Axis ball screw service on a Giddings & Lewis G50T horizontal boring mill. We are servicing the ball screw in position. Built a support cradle under the machining head prior to disconnecting the ball nut from the axis yoke. This type of rebuild is challenging. Ideally, the entire ball screw would be pulled from the machine, then refurbished on the ground in a horizontal position. But the location and geometry of the machine prevented these options. Not a job to take lightly. The main issue causing the ball screw issue on this machine was extended operation without the axis counterbalance system functioning properly. This, coupled with insufficient lubrication, is what wore down the ball screw assembly.

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