BLM Automatic Clutch

Custom CNC Machining of a Centrifugal Clutch

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Custom CNC Machining of a Centrifugal Clutch
Custom CNC Machining of a Centrifugal Clutch

An OEM manufacturer of compressors was in need of a solution for one of their products that had an issue starting in the cold weather. BLM was commissioned to manufacture a custom clutch to suit their demands, modifying a standard design to meet the specific needs of this customer. Utilizing advanced CNC milling and turning, a gray iron casting was used. A tolerance of ± 0.003" was maintained throughout and the unit was assembled and finished with a coating of blue paint. The produced 6" clutch would allow the engine to start and warm up before the compressor load was applied. Thorough dimensional inspection was implemented to ensure accuracy.

As requested, the compressor pulley was twice as large as the clutch pulley to facilitate the correct speed. The clutch is appropriate for the compressor's 18 HP engine, with an idle speed of 1600 RPM, and operating RPM of 3000. 30 units were produced in a turnaround time of 4 weeks, and shipped to the customer in Canada. This centrifugal clutch is suitable for multiple applications, and can be adapted to fit particular demands. For more information about this iron centrifugal clutch project, or the other custom clutch capabilities for demanding industrial applications, please see the table below or contact BLM directly

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Highlights of this Centrifugal Clutch Project

Project Scope
The OEM needed a solution to starting a compressor in cold weather. This was a good fit for a centrifugal clutch because it allowed the engine to start and warm up before the compressor load was applied. The customer required a 2:1 ratio for the belt drive where the compressor pulley was twice as large as the clutch pulley to facilitate the correct speed.
Product Application
Compressor 18 HP/ 3000 RPM/1600 IDLE
Product Description
6" clutch F60H-3748
Clutch Fabrication Capabilities Applied/Processes
Primary:
Material Sourcing
CNC Turning
CNC Milling
Secondary:
Assembly
Painting
Design
Modification of appropriate drawing from portfolio of 4000+ drawings
Equipment Used to Manufacture Part
CNC Lathes, CNC Mills, Various Machine Shop Equipment
Tightest Tolerances
± 0.003"
Material Used
Gray Iron Casting
Material Finish
Painted
Color: Blue
In process testing/inspection performed
Dimensional Inspection
Industry for Use
Multiple
Volume
30 Units
Delivery/Turnaround Time
4 Weeks
Delivery Location
Canada
Standards Met
Customer Specifications, 2D Drawing
Product Name
Centrifugal Clutch
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