custom shafts

A lot of people sell shafting but almost every shaft needs some customizing before it can fit into your application. WM Berg can customize our standard precision shafting for your specific needs. Custom rotary or linear shafts are available in a range of diameters and lengths, in inches or metric:

  • Diameters: .Ø1/32" - Ø2.0" (Imperial)
  • Diameters:  Ø3.0mm - Ø50.0mm (Metric)
  • Types: Ground, Ultra Ground, Ground & Case Hardened, Saw Cut

Dimensional tolerance and roughness average varies by shaft type, material and diameter:

  • Straightness tolerance: from best efforts basis to +/-0.0003” per foot
  • Diameter tolerance: from +/- .0000 to .0005" 
  • Length tolerance: from +/-0.010 to 0.125"
  • Surface finish Ra µin from 10 to 24

Our precision shafts are custom manufactured to tight tolerances and put through rigorous quality inspections using full-contact CMM, video measuring and more. We also manufacture ANSI standard stainless steel Woodruff keys (inches only). Berg engineers have answers for your questions across a range of topics including spec requirements, application objectives and precision part installation. 

Contact Technical Support  Request a Custom Part

custom shafting

Material Customizations


WM  Berg manufactures custom linear and rotary shafts in a variety of metals and plastics:


Stainless Steel

  • 303 Stainless Steel
  • 420 Stainless Steel
  • 440 Stainless Steel: Rockwell C50 to C55

Non-Ferrous Metals

  • 2024 T4 Aluminum
  • 2024 T351 Aluminum
  • 6063 T5 Aluminum
  • 6061 T6 Aluminum
  • Phosphor Bronze
  • Brass, Naval, Alloy 464


  • Cold Rolled Steel
  • 12L14 Steel
  • 1060 Steel: Rockwell C60-C65


  • Polyacetal
  • Polycarbonate
  • Delrin 500
  • Nylon 101

Modification Options for Precision Shafting

W.M. Berg custom precision shafts are used in a variety of environments due to their ability to support linear sliding motion or transmit rotary motion in a wide range of industrial and commercial applications. Our custom shafting can interface with motors, gearboxes, sprockets, pulleys and couplings.

Available shaft modifications include:

Available shaft coatings include:

custom precision shaft

Customize Shafts by Application

WM Berg supplies a complete line of custom engineered shafting to accommodate virtually all precision mechanical assembly requirements and operating conditions within the aerospace, healthcare, motion control industries.

Examples of common applications requiring custom precision rotary shafts:

  • Belt-driven & chain-driven systems used in conveyors, industrial machinery, woodworking machinery, material handling, hoists, drills & more
  • Mechanical indexers used in manufacturing & automation
  • Antenna & satellite gimbals, other applications using direct drive rotary motors
  • Motorized goniometer stages used in healthcare, laboratory equipment & micromachining
  • Rotary tables used in CNC machining & automated manufacturing
  • 6-axis robots used in picking, painting, material handling, inspection, welding, packaging & much more

Examples of common applications requiring custom precision linear shafts:

  • Healthcare industry linear actuators for mobile medical equipment including lift chairs, patient hoists, incubators, imaging equipment, operating tables & adjustable beds
  • Aviation linear actuators used in simulation devices, aircraft autopilot/throttle controls, visual guidance systems, seats, doors & stowage compartments
  • Industrial linear actuators such as load positioners, pick and place robots, fill & finish equipment, cutting machines & packaging equipment
  • Linear actuators used in robotics including touch screen testing, pipe inspection crawlers, competition robots & robotic arms/hands/grabbers
custom rotary shaft alongside shaft accessories

Custom Shaft Accessories

WM Berg also manufactures standard and custom shaft accessories including:

We also offer standard couplings and custom couplings as well as precision gears, sprockets and pulleys—from stock or customized to spec.

Our Shaft Manufacturing Process

custom ultra ground steel shaftingWM Berg has been the leader of premium precision part engineering and production for over 50 years. Working with a custom precision shaft manufacturer has never been so easy. Our product experts connect with you every step of the way from design and manufacturing to shipping and installation support. Our production process uses AQL sampling and lean manufacturing tools to deliver consistent quality, repeatability and economy.

Benefits of Going Custom with the Original Manufacturer

Standard precision shafts are well suited for applications powered by newer equipment. A custom OEM shaft allows long-term use of existing machinery and improved ability to evolve and optimize mechanical operations as business needs change. Additional benefits include:

Partner with WM Berg to Define Your Custom Shaft Design Needs

From concept to prototype through production, Berg design, application and mechanical engineers provide innovative solutions from our world-class manufacturing facility in Cudahy, WI. Send us your inquiry about custom precision shafting and we’ll be in touch within 24 hours.

Request for Quote Contact Technical Support