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Brewer A-Series Shaft Mounted Tensioner

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Product Specifications
Shaft Diameter
N/A  inches
Shaft Length
N/A  inches
Center to Center Spacing
0  inches
Thread Length
N/A  inches
Brand Name
Brewer Machine & Gear Co.

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Key Features

  • Adjustable take-up idler for restoring an elongated chain or belt to its original tension
  • Shaft mounting for attachment to a shaft or stud
  • Split base and locking screw for easy movement and tight clamping on shaft
  • 360-degree shaft rotation for controlled tensioning
  • Suitable for pairing to make a snubber for head and tail pulleys

Product Description

This Brewer A-Series universal drive tensioner is an adjustable take-up idler for restoring an elongated chain or belt to its original tension. (Idler shaft and set collar not included.) It mounts to a shaft or stud for applications without a frame member present. It has a split base and a locking screw for easy movement and tight clamping on the shaft, and it can be rotated for 360-degree controlled tensioning. It also works in pairs to make a snubber for head and tail pulleys. This tensioner is suitable for use with the Brewer SO-Series of matching idler shafts. Contact manufacturer for product interchange.

Belt and chain tensioners reduce belt or chain slack that occurs in power transmission drive systems through normal operation. Slack reduces drive efficiency and decreases the life of drive components. Belt and chain tensioners help to maintain the correct drive belt or chain tension in a system by reducing this slack and transmitting drive torque uniformly, resulting in reduced noise and vibration and decreased sprocket, pulley, belt, or chain wear. They also reduce the risk of over-tensioning that exists with manual retensioning operations. Tensioners are available in three categories: fixed, adjustable, and automatic. Fixed tensioners must be remounted in order to alter the tension of a drive system. Manual tensioners require operators to adjust screws or reposition parts as belt or chain slack increases. Automatic tensioners apply tension as needed through the use of weight, springs, elastomers, or compressed air. Factors to consider in selecting a proper tensioner include drive power, speed, torque, load, operating cycles, and available mounting space. Belt and chain tensioners are used in industrial machinery, conveyor belts, automobiles, and other applications.

Brewer Machine & Gear manufactures tensioners, positioners, and idlers for the power transmission industry.  The company, founded in 1944, is headquartered in St. Louis, MO.

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