Lempco
U.S. manufacturer of die sets and die guidance systems for metal stamping since 1918, known for Rotainer ball-bearing cages and 52100 tool-steel guide components.
Specifications & options
Product families
Component material
Through-hardened 52100 tool steel, precision ground
Bore finish
ID ground and honed to 8-12 RMS
Standards
Why choose Lempco?
Rotainer ball cages
The patented Rotainer ball cage rotates 360 degrees on the guide post to reduce ball tracking and extend bearing life.
52100 tool steel
Guide posts and bushings are made from through-hardened 52100 tool steel that withstands consistent preload.
High-speed accuracy
Precision-ground pins and honed bushings deliver repeatable accuracy in high-speed press applications.
Since 1918
Over a century supplying die-set components to automotive, appliance, electronics, and canning industries.
Product series
Understand each series to find the right fit for your application.
Rotainer Ball-Bearing Cages
Rotating ball cages that hold and space bearings on the guide post, minimizing tracking for longer life in high-speed dies.
Ball-Bearing Retainers
Non-tracking ball retainers that provide accuracy and repeatability for guide posts in precision stamping.
Guide Posts & Bushings
Demountable and shoulder steel guide-post bushings made from 52100 tool steel for ball-bearing die guidance.
Die Springs
Mechanical die springs engineered for ball-bearing die sets to maintain stripping force and consistent press performance.
Need a specific model or spare part?
Chat with our team on LINE and we’ll help you find the right one.