Tension Force Tension Force |
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Mounting Orientation Mounting Orientation |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Housing Material Housing Material |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Spring-Loaded Adjustable-Arm Roller Chain and Belt Tensioners
Tensioners take up slack and allow you to adjust tension on your roller chain or belt. A built-in spring allows the adjustment arm to apply continuous tension. They are for use with idler sprockets or pulleys.
For technical drawings and 3-D models, click on a part number.
Mounting Plate | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Tension Force, lbs. | Ht. | Wd. | Tension Arm Lg. | Overall Dp. | Material | Arm Rotation | Includes | Each | |
Vertical Mount | ||||||||||
| 1/2"-13 | 45 | 5" | 3 1/2" | 5" | 2 7/8" | Steel | 180° | Idler Shaft | 00000000 | 0000000 |
| 5/8"-11 | 45 | 5" | 3 1/2" | 5" | 2 7/8" | Steel | 180° | Idler Shaft | 00000000 | 000000 |
| 3/4"-10 | 45 | 5" | 3 1/2" | 5" | 2 7/8" | Steel | 180° | Idler Shaft | 00000000 | 000000 |
Horizontal Mount | ||||||||||
| 1/2"-13 | 45 | 3 1/8" | 4" | 5" | 2 1/2" | Steel | 180° | Idler Shaft | 00000000 | 000000 |
| 5/8"-11 | 45 | 3 1/8" | 4" | 5" | 2 1/2" | Steel | 180° | Idler Shaft | 00000000 | 000000 |
| 3/4"-10 | 45 | 3 1/8" | 4" | 5" | 2 1/2" | Steel | 180° | Idler Shaft | 00000000 | 000000 |
| Replacement Spring | 00000000 | Each | 000000 |
Heavy Duty Belt and Roller Chain Tensioners
Maintain correct drive tension to ensure smooth operation for maximum power and a long service life. Designed for use on large belt and chain drives, tensioners are spring loaded to provide constant tension and automatic adjustments for pulsating loads. Idler shaft (sold separately) is required.
For technical drawings and 3-D models, click on a part number.
Channel-Guided Roller Chain Tensioners
Built-in springs put constant tension on roller chain to absorb and buffer shock, reduce vibration, and improve drive performance.
For technical drawings and 3-D models, click on a part number.
Overall | Mounting Holes | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Roller Chain Trade Size | Tension Force, lbs. | Travel Ht. | Ht. | Wd. | Dp. | Material | Housing Material | Dia. | No. of | Mounting Fasteners Included | Max. Temperature, ° F | Each | |
For Single-Strand ANSI Roller Chain | |||||||||||||
Vertical/Horizontal Mount | |||||||||||||
| 35 | 15-40 | 1.05" | 5 15/32" | 2 5/16" | 1" | Plastic | Aluminum | 3/8" | 1 | No | 180° | 0000000 | 0000000 |
| 35 | 15-40 | 1.05" | 5 19/32" | 2 5/16" | 1" | Plastic | Aluminum | 3/8" | 1 | No | 180° | 0000000 | 000000 |
| 40 | 15-40 | 1.05" | 5 15/32" | 2 5/16" | 1" | Plastic | Aluminum | 3/8" | 1 | No | 180° | 0000000 | 000000 |
| 40 | 15-40 | 1.05" | 5 19/32" | 2 5/16" | 1" | Plastic | Aluminum | 3/8" | 1 | No | 180° | 0000000 | 000000 |
| 50 | 20-60 | 1.2" | 6 13/32" | 2 15/16" | 1 3/16" | Plastic | Aluminum | 7/16" | 1 | No | 180° | 0000000 | 000000 |
| 50 | 20-60 | 1.2" | 6 15/32" | 2 15/16" | 1 3/16" | Plastic | Aluminum | 7/16" | 1 | No | 180° | 0000000 | 000000 |
| 60 | 20-60 | 1.2" | 6 13/32" | 2 15/16" | 1 3/16" | Plastic | Aluminum | 7/16" | 1 | No | 180° | 0000000 | 000000 |
| 60 | 20-60 | 1.2" | 6 15/32" | 2 15/16" | 1 3/16" | Plastic | Aluminum | 7/16" | 1 | No | 180° | 0000000 | 000000 |
| 80 | 45-100 | 1.5" | 7 1/2" | 3 17/32" | 1 3/8" | Plastic | Aluminum | 1/2" | 1 | No | 180° | 0000000 | 000000 |
| 80 | 45-100 | 1.5" | 7 25/32" | 3 17/32" | 1 3/8" | Plastic | Aluminum | 1/2" | 1 | No | 180° | 0000000 | 000000 |
| 100 | 45-100 | 1.5" | 7 1/2" | 3 17/32" | 1 3/8" | Plastic | Aluminum | 1/2" | 1 | No | 180° | 0000000 | 000000 |
| 100 | 45-100 | 1.5" | 7 25/32" | 3 17/32" | 1 3/8" | Plastic | Aluminum | 1/2" | 1 | No | 180° | 0000000 | 000000 |
For Double-Strand ANSI Roller Chain | |||||||||||||
Vertical/Horizontal Mount | |||||||||||||
| 40 | 15-40 | 1.05" | 5 15/32" | 2 5/16" | 1" | Plastic | Aluminum | 3/8" | 1 | No | 180° | 0000000 | 000000 |
| 40 | 15-40 | 1.05" | 5 19/32" | 2 5/16" | 1" | Plastic | Aluminum | 3/8" | 1 | No | 180° | 0000000 | 000000 |
| 60 | 20-60 | 1.2" | 6 15/32" | 2 15/16" | 1 3/16" | Plastic | Aluminum | 7/16" | 1 | No | 180° | 0000000 | 000000 |
For Single-Strand ISO Roller Chain | |||||||||||||
Vertical/Horizontal Mount | |||||||||||||
| 06B | 5-30 | 1.05" | 5 19/32" | 2 5/16" | 1" | Plastic | Aluminum | 3/8" | 1 | No | 180° | 0000000 | 000000 |
Ultra-Low-Profile Channel-Guided Roller Chain Tensioners
Able to fit in tight spots, these tensioners are less than 3" tall. Built-in springs put constant tension on roller chain to absorb and buffer shock, reduce vibration, and improve drive performance.
For technical drawings and 3-D models, click on a part number.
Overall | Mounting Holes | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Roller Chain Trade Size | Tension Force, lbs. | Travel Ht. | Ht. | Wd. | Dp. | Material | Housing Material | Dia., mm | No. of | Mounting Fasteners Included | Max. Temperature, ° F | Each | |
For Single-Strand ANSI Roller Chain | |||||||||||||
Vertical/Horizontal Mount | |||||||||||||
| 35 | 2-4 | 0.6" | 2 9/16" | 2" | 19/32" | Plastic | 304 Stainless Steel | 5 | 2 | No | 140° | 000000 | 0000000 |
| 35 | 13-19 | 0.6" | 2 9/16" | 2" | 19/32" | Plastic | 304 Stainless Steel | 5 | 2 | No | 140° | 0000000 | 000000 |
Low-Profile Channel-Guided Roller Chain Tensioners
At less than 4" in height, these tensioners are good for use on low-clearance drives. Built-in springs put constant tension on roller chain to absorb and buffer shock, reduce vibration, and improve drive performance.
For technical drawings and 3-D models, click on a part number.
Overall | Mounting Holes | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Roller Chain Trade Size | Tension Force, lbs. | Travel Ht. | Ht. | Wd. | Dp. | Material | Housing Material | Dia., mm | No. of | Mounting Fasteners Included | Max. Temperature, ° F | Each | |
For Single-Strand ANSI Roller Chain | |||||||||||||
Vertical/Horizontal Mount | |||||||||||||
| 25, 35 | 7-13 | 1.6" | 3 25/32" | 2 25/32" | 1 1/4" | Plastic | Steel | 6 | 2 | No | 140° | 000000 | 0000000 |
| 25, 35 | 13-29 | 1.6" | 3 25/32" | 2 25/32" | 1 1/4" | Plastic | Steel | 6 | 2 | No | 140° | 000000 | 000000 |
| 40 | 7-13 | 1.6" | 3 25/32" | 2 25/32" | 1 1/4" | Plastic | Steel | 6 | 2 | No | 140° | 000000 | 000000 |
| 40 | 13-29 | 1.6" | 3 25/32" | 2 25/32" | 1 1/4" | Plastic | Steel | 6 | 2 | No | 140° | 000000 | 000000 |
| 50 | 7-13 | 1.6" | 3 25/32" | 2 25/32" | 1 1/4" | Plastic | Steel | 6 | 2 | No | 140° | 000000 | 000000 |
| 50 | 13-29 | 1.6" | 3 25/32" | 2 25/32" | 1 1/4" | Plastic | Steel | 6 | 2 | No | 140° | 000000 | 000000 |
| 60 | 7-13 | 1.6" | 3 25/32" | 2 25/32" | 1 1/4" | Plastic | Steel | 6 | 2 | No | 140° | 000000 | 000000 |
| 60 | 13-29 | 1.6" | 3 25/32" | 2 25/32" | 1 1/4" | Plastic | Steel | 6 | 2 | No | 140° | 000000 | 000000 |
Constant-Tension V-Belt Pulleys
A built-in spring maintains tension on your belt.
For technical drawings and 3-D models, click on a part number.
Keyway | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| OD | For Shaft Dia. | Pitch Dia. | Wd. | O'all Wd. | Wd. | Dp. | Material | Body Type | Includes | Each | |
For 4L, 5L, A, AX, B, BX Belts | |||||||||||
| 3.25" | 1/2" | 1.91"-3.15" | 11/16" | 2 7/16" | __ | __ | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 3.25" | 5/8" | 1.91"-3.15" | 11/16" | 2 7/16" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 00000 |
| 3.25" | 3/4" | 1.91"-3.15" | 11/16" | 2 7/16" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 00000 |
| 4" | 1/2" | 1.95"-3.9" | 11/16" | 2 7/16" | __ | __ | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 4" | 5/8" | 1.95"-3.9" | 11/16" | 2 7/16" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 4" | 3/4" | 1.95"-3.9" | 11/16" | 2 7/16" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 5" | 5/8" | 2.37"-4.84" | 15/16" | 3 5/8" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 5" | 3/4" | 2.37"-4.84" | 15/16" | 3 5/8" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 5" | 7/8" | 2.37"-4.84" | 15/16" | 3 5/8" | 3/16" | 3/32" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
| 5" | 1" | 2.37"-4.84" | 15/16" | 3 5/8" | 1/4" | 1/8" | Cast Iron | Solid | One Set Screw | 0000000 | 000000 |
Spring Installation and Removal Tools
Steel jaws hook onto compression or die springs to facilitate installation and removal.
| For Spring Type | Overall Lg. | Jaw Material | Pair | |
| Compression, Die | 12 1/4" | Steel | 0000000 | 000000 |