Founded in 1990, China Famen Bearing Co., Ltd. is specialized variable speed pulley manufacturer and variable speed pulleys distributor of all types of custom and cheap bearings. We obtained ISO9002, ISO14001, and QS9000 certificates in 1995 and 1996, 1999 respectively. Other advanced equipments include four RGB and RCI series heat treatment production lines with a treatment quantity totaling 1,500 kilograms per hour. The Multi-points temperature control meters and CNC display meters with bi-directional control have been adopted to complement these units.

Swati Variable Speed Pulley Drives convert any standard constant speed motor to a variable speed instantly, accurately, smoothly & while the machine is in motion. The speed variation achieved is 1:3 and in combination with various fixed pulleys practically full middle speed range is covered.Pulley disks(A) slide axially along the serrated hub(B) and are forced on to the working flanks of the variable speed belt(C) by special basket shaped springs(D). These special basket shaped springs are located in rotational symmetry on both the disks & provide the required force for efficient power transmission. The connection between the pulley disks & the hub is through serrations. Due to these serrations, minor allowable surface pressures are maintained. Therefore a very long life is achieved.

Lovejoy offers the most complete line of non-enclosed variable speed belt drives from fractional through 30 horsepower. Each component is made with the quality and reliability that Lovejoy builds into all of its power transmission products.
Features and Benefits
Very economical and reliable method of speed change
Allows the user to find the ideal
speed without changing sheaves and belts
Can be used as a highly efficient belt tensioner, with no adjustment necessary
Offers a form of "soft-start," eliminating belt slip and premature wear on belt drives with inherent high torque start-up requirements
Applications That Best Fit Variable Speed Drives
Conveyors
Mixers
Printing Equipment
Packaging Machines
Agricultural Machinery
Pumps

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