Belt Adjusters | McMaster-Carr

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Buckle Type

Spring-Loaded Clamp

Squeeze Release

Width

Material

Stainless Steel

Component

Attachment Type

Roller Chain Trade Number

For Maximum Belt Width

Belt Type

Maximum Tension Force Rating

Weight Capacity

Less than 250 lb.

250 lb. to 349 lb.

350 lb. to 499 lb.

500 lb. to 999 lb.

1,000 lb. or greater

Length

Minimum Tension Force Rating

For Idler ID

Mounting Position

Tension Force

5 lbf to 30 lbf

7 lbf to 13 lbf

13 lbf to 19 lbf

13 lbf to 29 lbf

15 lbf to 40 lbf

REACH

RoHS

DFARS Specialty Metals

Export Control Classification Number (ECCN)

For V-Belt Cross Section

Housing Material

304 Stainless Steel

Finish

Thread Size

Maximum Temperature

Mounting Plate Width

Overall Depth

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164 Products

Belt Tension Gauges

Belt Tension Gauges

Keep an eye on belt tension to minimize vibration, noise, and slippage.

Ultrasonic Belt Tension Gauges

Ultrasonic Belt Tension Gauges

Check the tension of your machine’s flat, timing, or V-belt—no matter its width. These gauges use ultrasonic sound waves to take noncontact readings.

Tensioners for Chain and Belt Drives

Heavy Duty Spring-Loaded Adjustable-Arm
Belt and Roller Chain Tensioners

Heavy Duty Spring-Loaded Adjustable-Arm Belt and Roller Chain Tensioners

Maintain correct drive tension to ensure smooth operation for maximum power and a long service life.

Heavy Duty Spring-Loaded Belt
and Roller Chain Tensioners

Designed for large belt and chain drives, these tensioners maintain correct drive tension for smooth operation, maximum power, and a long service life.

Spring-Loaded Adjustable-Arm
Roller Chain and Belt Tensioners

Spring-Loaded Adjustable-Arm Roller Chain and Belt Tensioners

Apply continuous tension and automatically take up slack at any point in a 180° arc.

Adjustable-Screw Roller Chain and Belt Tensioners

Adjustable-Screw Roller Chain and Belt Tensioners

Precisely apply tension in a straight line by moving the adjustment screw.

Adjustable-Arm Roller Chain and Belt Tensioners

Adjustable-Arm Roller Chain and Belt Tensioners

Position the adjustment arm to control tension in a 360° arc.

Roller Chain Tensioning Rings

Install these rings between strands of chain to absorb slack without the need for realignment, lubrication, or tools—good for use in confined spaces where maintenance may be difficult.

Floating Roller Chain Tensioners

Mount these tensioners directly onto your chain drive. They have adjustable straps that take up slack and apply constant tension.

Channel-Guided Roller Chain Tensioners

These tensioners range in height from 5 15/32" to 7 25/32".

Ultra-Low-Profile Channel-Guided
Roller Chain Tensioners

Able to fit in tight spots, these tensioners are less than 3" tall.

Low-Profile Channel-Guided
Roller Chain Tensioners

At less than 4" in height, these tensioners are good for use on low-clearance drives.

Webbing, Buckles, and Fittings

Load-Rated Sew-On Buckles for Webbing

Permanently sew webbing onto these buckles.

Load-Rated No-Sew Buckles for Webbing

Attach webbing to these buckles without sewing.

Load-Rated Slip-On Buckles for Webbing

The slotted bar on these buckles allows you to attach an eye easily.

Light Duty No-Sew Buckles for Webbing

These buckles have a bar that grips webbing tightly without sewing.

Light Duty Sew-On Buckles for Webbing

Permanently sew webbing onto these buckles.

Light Duty Slides for Webbing

Add a slide to webbing to make adjustable straps.

Load-Rated Slides for Webbing

These slides are rated for heavy duty applications.

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)