Centrifugal Clutch for the Public Works Industry

Centrifugal Clutch for the Public Works Industry

BLM Automatic Clutch was contracted by an OEM customer in the public works industry to manufacture a custom clutch.

BLM was required to meet exacting standards while preserving customer price criteria, as they were stepping in to produce the part after a previous supplier could no longer maintain an acceptable price point.

A flywheel mounted clutch and pulley system was required for an industrial sweeper application, with a mandatory 5 grove, 5V, 10″ pulley. This was not a problem for BLM, who was able to convert drawings of an existing pulley style clutch system into the part meeting the customer’s parameters.

Composed of steel and precision machined using state-of-the-art CNC lathes and milling equipment, the unit was assembled and finished with a coating of blue paint. The finished 8″ clutch met the space, size, and configuration requirements in the 150 HP sweeper with an idle RPM of 800 and operating RPM of 3000. 30 units were constructed after a turnaround time of 8 weeks and shipped to the customer in Japan. All products were fully dimensionally inspected for quality and accuracy. BLM is fully prepared to replace customer components with more cost effective solutions

For more information about this custom clutch machining project or the other retrofitting capabilities available, please see the table below or contact BLM directly.

Highlights of this CNC Machined Custom Centrifugal Clutch Project

Project Scope

The OEM required a flywheel mounted clutch and a pulley. The pulley needed to be a 5 groove, 5V with a 10″ diameter. The previous OEM was unable to continue supplying at an acceptable price point. BLM was able to retrofit to meet space size and configuration requirements at the right price point

Product Application

Industrial Sweeper 150 HP/3000 RPM/800 IDLE

Product Description

6″ clutch B66SKM with QD bushing

Clutch Fabrication Capabilities Applied/Processess



  • Assembly
  • Painting


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


Material Finish

Color: Blue

In process testing/inspection performed

Dimensional Inspection

Industry for Use

Public Works


30 Units

Delivery/Turnaround Time

8 Weeks

Delivery Location


Standards Met

Customer Specifications, 2D Drawing

Product Name

Centrifugal Clutch