(click on thumbnail to enlarge)Custom Splines: Involute and Straight Sided

Additional Gearing

Worm and Worm Gears Sets

Our Worm and Worm Gear Capabilities

  • Gear Diameter: Max 120”
  • Worm Diameter: Max 10”
  • Diametral Pitch: Max 1.5 DP / 20 Mod

CIrcle Gear proudly offers worm and gear cutting services. Our sales and engineering team will work with you to determine gear pitch and set center distance from your samples. With a large inventory of cutting tools, we can easily find a match for your project. We hand-roll test the worm set to ensure center distance, backlash, and pattern are within requirements. Worms are usually tooth ground to provide the smoothest action possible.

Spline Shafts

Our Spline Shaft Capabilities
  • Shaft Diameter: Max 42” swing
  • Shaft Length: Max 140”
  • Pitch: Max 2.5 DP

As one of the top manufacturers of spline shafts, Circle Gear provides a wide range of configurations for our custom spline shafts. We work closely with our customers to ensure they get tailored spline shafts that meet even the most complex and unusual specifications.

At Circle Gear & Machine Company, we have served the gear market for over 70 years. With our experience machining spline shafts and other spline machining capabilities, we can assist you in finding the right size, shape, and tooth count for your specific application. Request a quote for our services today.

Additional Gearing

As a full-service provider of gear manufacturing services, Circle Gear features full machining capabilities for all types of gears. Our sales and engineering team can help you with non-standard pitches or modified designs due to ratio changes or gear box modifications. Please inquire if you have any questions for that following gear types:

  • Straight / Spiral Bevels
  • Helical Gears ( double helicals)
  • Spur Gears
  • Racks (Flat or cylindrical)
  • Involute Splines
  • Straight Sided Splines
  • Worm and Worm Gear
  • Herringbone Gears
  • Timing Gears
  • Sprocket and Silent Chain
  • Planetary Systems

Gear Manufacturing Methods

We have the versatility to support almost every gear manufacturing method possible. We continue to upgrade our machines and capabilities to provide the most economical way to achieve the highest quality possible. Our current methods include:

  • Hobbing (conventional tool steel with job specific coatings)
  • Shaper Cutting (conventional tool steel with job specific coatings)
  • Form Cutting
  • Form Grinding
  • Broaching
  • Shaving
  • Lapping

Manufacturing Support

With over 135 available listed manufacturing operations and 122,000 sq. ft. floor space dedicated to production, we can provide a solution to every feature of your part.

  • Barstock sawing (16” Dia)
  • Manual Turn & Mill
  • CNC Turn & Mill
  • O.D. & I.D. Grind
  • Bore Hone
  • Surface Grind
  • Keys
  • Deburring (manual and automatic)
  • Stamping (Laser etch and dot peen)
  • Magnetic Particle Inspection
  • CMM Inspections
  • Gear Metrology Reports

Materials and Heat Treating

Circle Gear has an impressive stock of raw materials and is acquainted with every type of material known to be used in the industry. Our sales and engineering team will work with you to decide the best materials when reproducing from samples and find the exact match from print. Please call to discuss any questions you have for materials and heat treatment processes that are available.

Materials:
Alloy Steels- 4140, 4340, 4320, 8620, 9310, 18CrNiMo7-6, 42CrMo4
Carbon Steels- A36, 1018, 1045, 1144
Aluminum
Stainless Steel
Tool Steel
Ductile Iron / Cast Irons
Bronze / Brass

Heat Treat Methods:
Quench & Temper
Carburize
Nitride
Flame Harden
Induction Harden
Die-Quenching

Industries that Utilize Our Gearing

To illustrate the versatility and reliability of various gear types, here are the main industries that use every type of gear we make.

  • Automotive
  • Biotechnology
  • Chemical
  • Construction
  • Electrical
  • Electronics
  • Food Processing
  • HVAC
  • Machinery
  • Marine
  • Medical
  • Mining
  • Nuclear
  • Oil, Gas, Petroleum
  • Optical
  • Packaging
  • Pharmaceutical
  • Plumbing
  • Pneumatics
  • Pulp & Paper
  • Pump
  • Semiconductor

At Circle Gear & Machine Company, we have served the gear market for over 70 years. With our experience manufacturing high quality gears with extensive machining capabilities, we can assist you in finding the best economical methods with the highest quality for your specific application. Request a quote for our services today.

Custom Involute Splines and Straight Sided Splines Capabilities

Internal SplineMax
42 Inch
External Spline Max
120 Inch
Shaft LengthMax
140 Inch
Diametrical PitchMax
2.5 DP
Module10
General CapabilitiesAs Needed
Contract
Just-In-Time
Production
Small Parts
Primary CapabilitiesDie Forming
Finishing
Heat Treating
Machining
MaterialsAcetal/Delrin
Alloy Steel
Aluminum
Brass
Bronze
Carbon Steel
Ductile Iron
Gray Cast Iron
Nylon
Plastic
Phenolic
Polycarbonate
Polyester
Stainless Steel
Industry FocusAutomotive
Biotechnology
Chemical
Construction
Electrical
Electronics
Food Processing
HVAC
Heating, Ventilation, and Air Conditioning
Machinery
Marine
Medical
Mining
Nuclear
Oil, Gas, Petroleum
Optical
Packaging
Pharmaceutical
Plumbing
Pneumatics
Pulp & Paper
Pumps
Semiconductor
Shaft FeatureFlat
Hex
Gear Cutting MethodBroaching
Climb Hobbing
Conventional Hobbing
Milling
Shaping
Gear Forming MethodCentrifugal Casting
Die Casting
Forging
Gear Finishing MethodsGrinding
Honing
Lapping
Shaving
Heat Treatment MethodsCarburizing
Flame
Induction
Nitriding
Production VolumeSpecialty Production Shop
Prototype
Low Volume
Small Run
High Volume
Large Run
Long Run
Large Scale Production Volume Run