Superfinishing Machines

Superfinishing Process with Stones for Camshaft and Crankshaft Surface Finishing

Superfinishing process is well-adapted to the manufacturing lines of rods, shafts, crankshafts and camshafts. We offer driveline manufacturers both centerless grinding machines and superfinishing machines as surface polishing solutions to attain the level of surface smoothness or workpiece geometry required.


We have supplied superfinishing machines to over 350 clients in the automotive and electronics industries worldwide since 1978. All our machines meet European and American safety standards, allow remote monitoring, and enable minimum tool change time with modularized stone guides. Our customized loading and unloading systems seamlessly integrate our surface grinding machines with your existing production line.

Superfinishing Solutions for Shock Absorber Piston Rods, Crankshafts, Camshafts & Speed Gears

We offer various through-feed and plunge-finishing superfinishers and centerless grinders to manufacturers of engine valves, crankshafts, camshafts, drive-train gears, piston pins and shock absorber piston rods. Our versatile superfinishers are used by global Tier 1 automotive parts manufacturers whose superfinishing process cycle times demand a feed speed of 20 feet per minute.


Machine specifications can be customized to the customer’s processes, required roughness needs, PLC preferences, feeding methods, and equipment safety standards.

Superfinishing Machines | Stone Finishing

We offer customized superfinishers with different roller sizes, stone guides, and oscillation support. The modularized stone guides are designed for quick tool change, enabling operators to take as little as 15 minutes to switch stones for different workpiece diameters and lengths. Our stone guides not only shorten the production cycle time, but also make maintenance easy and straightforward.


LPR’s superfinishing machines are equipped with a range of features and customization options. To improve productivity and reduce the costs of your operations, our machine allows 2-5 surfaces to be finished simultaneously. Clients can choose between manual and automatic options for loading and unloading. We can also design custom machines for specialized grinding applications including inner and outer diameter finishing, gear finishing or wheel hub finishing.


Read our superfinisher specifications and case studies to learn more about our engineering expertise as a leading micro-grinding machine manufacturer in the automotive industry.

Superfinishing Machines Specifications PDF Icon

Case Study: Superfinishing Machine for Automotive Parts Manufacturing PDF Icon

A leading automotive parts manufacturer in USA needed to superfinish shock absorber piston rods with post chrome plating. We provided them with a superfinishing machine that achieved their workpiece surface roughness and diameter tolerance requirements while meeting their electrical safety standards.


Case Study: Superfinishing Machine for Ceramic Parts Manufacturing PDF Icon

A German manufacturer of precision ceramic components wanted to replace their vibratory grinder with a superfinishing machine. A major concern was the hardness of the finishing stone. We provided a custom superfinisher and tested various combinations of stone grades to find the ideal solution for their application.


Case Study: Superfinishing Machine for Shock Absorber Piston Rods PDF Icon

A global Tier 1 manufacturer of shock absorber piston rods was in need of a superfinishing machine that could achieve superior surface finishes and tight tolerances within short cycle times. We provided our DSF-900 model, designed for quick stone change times and precise roller setting.

Superfinishing Machines | Tape Finishing

Our Tape-type Superfinishing Machines achieve consistently even finishes down to 0.01 Ra on a variety of automotive parts such as crankshafts, camshafts, engine valves, gear shafts and cylinders. By combining workpiece rotation and tool oscillation with the continuous feeding of abrasive 3M Microfinishing film, we provide superior surface finishes, free of the chatter marks seen with stone grinding. Our tape finishing solutions offer benefits including easy monitoring and operation, availability of customized attachments, and a durable mechanical oscillation system.

Other Microfinishing Solutions | Lapping & Buffing MachinesPDF Icon

  • Lapping Machines: Our lapping machines are mainly used for finishing journal pins, oil seal parts, and crankshaft and camshaft flanges.
  • Buffing Machines: The major application of our buffing machine is for processing the outer face of steering rack bars.

Superfinishing Machine Applications | Engine, Transmission and Chassis Components

Engine Components

  • Crankshaft
  • Camshaft
  • Piston Pin
  • Rotor shaft
  • Water Pump Shaft
  • Intake and Exhaust Valves
  • Balance Shaft
  • Pump Gear
  • Rocker Arms, Valve Tappets/Lifters

Transmission Components

  • Reverse Clutch Retainer
  • Clutch Hub
  • Sun Gear
  • Direct Clutch Retainer
  • Underdrive Clutch Retainer
  • Output Gear
  • Annulus Gear
  • Planet Carrier
  • Speed Gear
  • Clutch Housing

Chassis Components

  • Tie Rod End
  • Shock Absorber Rod
  • Ball Joints

Superfinishing Machines for Engine and Transmission Component Manufacturers

As grinding machine experts in the automotive industry, we are proud to be the largest grinding machine supplier to Hyundai-Kia, and a major superfinisher supplier to global tier 1 companies making engines and transmission components. We strive to come up with machine and tool designs that minimize human error and produce consistent quality, independent of the operator’s experience.


Our exemplary clients of surface grinding machinery in the automotive industry include, but are not limited to:

  • Hyundai & Kia: Crankshaft Lapping Machines, Superfinishing Machines
  • Beijing Beinei: Camshaft Lapping Machines
  • Great Wall Motors: Crankshaft Lapping Machines
  • Linamar: Superfinishing Machines
  • Liuzhou Ruiming Weiluo: Camshaft Lapping Machines
  • Monroe, Tenneco Group: Superfinishing Machines
  • Seowon Cam: Camshaft Lapping Machines
  • World Group: Superfinishing Machines

Superfinishing Machines | Lapping Machines

LPR Global provides a wide range of solutions to your finishing needs. Whether it is a standard machine or a customized one, we can meet your required roughness, cycle time, PLC preference, specific safety standards and integrate with your pre and post processes.


Superfinishing Machines | Through Feed Finishing

• Workpiece: Piston pin
• Weight: 2.5 Tons


Superfinishing Machines | Through Feed Finishing

• Workpiece: Shock absorber rod
• Rollers are interchangeable with Supfina’s rollers


Crankshaft Lapping Machines

• Workpiece: Crankshaft
• Various models of crankshaft lapping machine are available upon request


Camshaft Lapping Machines

• Workpiece: Camshaft
• Various models of camshaft lapping machine are available upon request

Lapping Machines | Plunge Finishing | Automotive Components

Superfinishing Machines | Automotive Parts

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