• End Machining

End Machining

ABSSAC employs some of the latest machining techniques to the lead screws, ball screws and satellite roller screws it supplies, to ensure that a high journal concentricity product is delivered. That same capability can be applied to all screws regardless of diameter but also promotes the ability to provide a dynamic approach to all associated nut designs. Let ABSSAC work with you to reduce your scrap rates and supply leadscrew, ball screw and satellite roller screw solutions that fit into your application every time. ABSSAC can work directly from your dimensional drawings or if they do not exist, a physical sample to reverse engineer from.

Knowledgeable staff, always available 

Interestingly, a quick turnaround by Abssac has recently aided the restoration of two pre WW11 machine tools being restored to their former glory in a local woollen mills maintenance workshop. Despite the customer being without the original dimensional drawings for the ball screws and the fact that they were very much damaged, meant that Abssac had to rely on its extensive ball screw knowledge to satisfy the customer. First a careful measurement of the last remaining ball screw was undertaken. It was found that the ball screw was imperially sized, with a 1.00 inch diameter by 0.250 inch lead, Gothic arch ball screw format.

Abssac was able to utilise a cold rolled formed ball screw format, which were cut to a length and then machined at the ends to allow them to fit a thrust bearing to the whole assembly. The traditional square section nuts that were used by the old machines were replaced by adapted standard product range nuts and were chosen specifically for authenticity due to their single ball return design.  The whole assembly was then low temperature black Chrome plated, which gave a corrosion resistant and exceptionally smooth and scratch resistant surface finish, hopefully giving the machine at least another 50 years of service.

Mr Phil Jones of Abssac says, “We have had great success in reverse engineering original designs of lead and ball screws where no formal drawing exists. Customers have shipped the parts for us to dimensionally check and copy into a new physical part. It is particularly nice to get involved with these types of project were we are part of a restoration. Abssac has a huge range of linear products, so nine times out of ten we can help with these more unusual requirements”.

Custom Lead screw features supplied in the past have included

End Journals to suit bearing mounts
Threaded Journals
Flats
Slots
Keyways
Chamfers
Tapers
Cross Holes
End Holes / Gun drilling
Internal Threads
Bearing Reliefs
Snap Ring Grooves
E Clip Grooves
Full Radius Ends

ABSSAC also offers an assembly service 

Multiple Piece Lead Screws – Product designs that comprise several components.
Multiple Component Lead Nuts – Custom drive nut assemblies in plastics or metals.
Cross and End Pins
Complete sub-assemblies
Press and Slip Fits
Hand Fitting and Lapping
Bearing Installation
Glue Application
Thread Locker Application
Auxiliary Assemblies
Fastener Installation
Sealing and Packaging


  • End Machining
  • End Machining
    End Machining
  • Gun drilled and tapped ID
    Gun drilled and tapped ID
  • Ground Finish
    Ground Finish
  • Key way on turned journal end
    Key way on turned journal end
  • Special Finish Machining
    Special Finish Machining
  • Power Screw Machined Journals
    Power Screw Machined Journals
  • Reduce your scrap rates
    Reduce your scrap rates

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