Precision-Turned Parts

Griner Engineering is a globally competitive supplier on high volume precision machined parts that have multiple secondary operations. We are a supplier who offers a full range of services including rotary transfer machining, conventional screw machining, CNC machining, inventory management, and design assistance.

We are a supplier who understands the meaning of zero defects, global competition, and continuous improvement in everything we do. In addition to precision machined production parts, Griner Engineering, Inc. has capabilities in prototype and development work.

Product Applications

Engine Parts
Seat & Safety Restraint
Diesel Engine
Ride Control
Fuel System
Air Bag
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Complex Turned Parts

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Product Specialities: Part Families

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Transmission planetary pins, super-finished rocker arm shafts, hardened and ground pins for track and attachments

Large Fluid Couplings CNC Machined Engine Parts

Fuel rail components – Fuel & oil fittings

Airbag Initiator – Solenoid Bodies

Fuel Pressure Regulator Thermostat Cores

Machining of cold-formed pinion blanks and family of miscellaneous spacers, diesel rocker arm shafts

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Precision turned parts, AKA precision components, provide stability in various applications to hold products in place. These parts can be manufactured using CNC machinery, ensuring that only reliable components are engineered for your particular project needs. If your project requires extreme precision and a high level of performance, complex turned parts manufactured with accuracy, and the latest technologies can help accelerate your processes.

Precision Turned Parts – A Quick Overview

Precision turning refers to the production of complex turning parts like axle nuts, screws, pins, interface nozzles, shock absorber bolts, etc. These parts are formed by machining the material on a roll and removing the swarf with a cutting tool to shape the material into a finished product. Also called screw cutting, the process helps in manufacturing turning parts to be delivered across various industries.

Applications of Precision Turned Parts

Precision turned parts have wide-ranging applications and serve myriad industries, including:
  • Automotive
  • Aeronautics
  • Electronics
  • HVAC
  • Marine
  • Medicine
  • Telecom
Precision turning helps just any sector that requires part precision and superior quality. Medical components may be intricate; hence, these are manufactured with sanitary-grade materials like stainless steel and titanium. It helps facilities adhere to stringent medical standards.
The complex turned parts process allows for cost-effective design capabilities and structural benefits, offering exceptional depth and dimension to each part. These complex parts are manufactured with tighter tolerances using a straightforward yet crucial process called CNC turning.

CNC Turning Process

Precision turned parts can be formed in two different ways:
CNC machine turning starts when a hexagonal, square, or round blank is fastened to the spring collet of a spindle. The blank then spins as multiple automated drilling, cutting, and knurling tools affixed to the machine work the blank into a precision turned part by shaving away the extra material from the workpiece.
On the other hand, the process accomplished through the CNC lathe is all computer-controlled. It works to shape the part by holding and rotating a blank on a single spindle while a drill bit cuts it precisely.

Things to Consider When Hiring a Precision Turned Parts Manufacturer

If you are preparing for your manufacturing project, look for a certified, world-class manufacturer that offers specialized engineering processes and extremely tight tolerances. State-of-the-art CNC turning machines, high-speed production capabilities, and the latest techniques are a few more considerations to keep in mind. If you’re on a budget but do not wish to compromise on quality, CNC turning offers a faster turnaround, affordability, and pinpoint accuracy without sacrificing the stability of the part.

Looking for a Precision Turned Parts Manufacturer in Bloomington, Indiana?

Complex precision turned parts manufacturing requires experience and a thorough understanding of the processes to promise quality. At Griner Engineering, Inc., we are a certified, experienced, and qualified precision turned parts manufacturer in Bloomington, IN. Our team utilizes state-of-the-art processes and materials like steel, aluminum, copper, brass, etc., to accommodate your unique requirements.
Our operators take every job seriously to meet and, in fact, exceed client expectations. No project is too big or small for us. We promise top-notch quality, timely deliveries, and a satisfaction guarantee.
Call us at 812-332-2220 today to request a quote and get started with your project without further delay. You can also email us your queries at, and one of our sales reps will contact you ASAP.