Product Overview
KASI supplies backup wrenches across Canada and Alberta, ensuring maximum safety during bolt-up procedures. Designed to prevent both nuts from rotating, these tools allow users to easily fit and remove the back nut reaction arm, improving safety and efficiency during tightening applications.
Safety is always a priority in bolting operations, and the backup wrench is an essential tool for controlled torque application. By securely holding the back nut in place, the backup wrench eliminates unwanted rotation, protecting equipment and reducing operator risk.
Key advantages include:
- Enhanced Safety: Prevents both nuts from rotating during tightening.
- Ease of Use: Quick-fit and removal reaction arm design.
- Durability: Built from high-strength materials for industrial environments.
- Versatility: Suitable for use with hydraulic torque wrenches, nutrunners, and other bolting tools.
IMPERIAL COMPLETE SET
| Model number | Description | BWH incl. set of links: | |
|---|---|---|---|
| From | To | ||
| BWI-SET | Holder complete with imperial link set (12 pcs) | 1 7/16″ | 3 7/8″ |
HOLDER AND IMPERIAL HEXAGON LINKS
| Model number | Description | Hexagon AF size | Dimensions (in) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | |||
| BWH | Backup wrench holder | – | |||||||
| BWI-107 | Hexagon link | 1 7/16″ | 2.54 | 15.37 | 1.42 | 1.77 | 8.33 | 1.97 | 5.79 |
| BWI-110 | Hexagon link | 1 5/8″ | 2.90 | 15.37 | 1.42 | 1.77 | 8.69 | 1.97 | 5.79 |
| BWI-113 | Hexagon link | 1 13/16″ | 3.09 | 15.37 | 1.42 | 1.77 | 8.88 | 1.97 | 5.79 |
| BWI-200 | Hexagon link | 2″ | 3.35 | 15.37 | 1.42 | 1.77 | 9.14 | 1.97 | 5.79 |
| BWI-203 | Hexagon link | 2 3/16″ | 3.45 | 15.37 | 1.42 | 1.77 | 9.24 | 1.97 | 5.79 |
| BWI-206 | Hexagon link | 2 3/8″ | 3.66 | 15.37 | 1.42 | 1.77 | 9.46 | 1.97 | 5.79 |
| BWI-209 | Hexagon link | 2 9/16″ | 3.84 | 15.37 | 1.42 | 1.77 | 9.63 | 1.97 | 5.79 |
| BWI-212 | Hexagon link | 2 3/4″ | 4.12 | 15.37 | 1.42 | 1.77 | 9.91 | 1.97 | 5.79 |
| BWI-215 | Hexagon link | 2 15/16″ | 4.45 | 15.37 | 1.42 | 1.77 | 10.24 | 1.97 | 5.79 |
| BWI-302 | Hexagon link | 3 1/8″ | 4.71 | 15.37 | 1.42 | 1.77 | 10.50 | 1.97 | 5.79 |
| BWI-308 | Hexagon link | 3 1/2″ | 5.22 | 15.37 | 1.42 | 1.77 | 11.01 | 1.97 | 5.79 |
| BWI-314 | Hexagon link | 3 7/8″ | 5.81 | 15.37 | 1.42 | 1.77 | 11.60 | 1.97 | 5.79 |
METRIC COMPLETE SET
| Model number | Description | BWH incl. set of links: | |
|---|---|---|---|
| From | To | ||
| BWM-SET | Holder complete with metric link set (14 pcs) | 36 mm | 100 mm |
HOLDER AND METRIC HEXAGON LINKS
| Model number | Description | Hexagon AF size | Dimensions (mm) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | |||
| BWH | Backup wrench holder | – | |||||||
| BWM-36 | Hexagon link | 36 mm | 64.5 | 390 | 36 | 45 | 211.5 | 50 | 147 |
| BWM-41 | Hexagon link | 41 mm | 73.5 | 390 | 36 | 45 | 220.5 | 50 | 147 |
| BWM-46 | Hexagon link | 46 mm | 78.5 | 390 | 36 | 45 | 225.5 | 50 | 147 |
| BWM-50 | Hexagon link | 50 mm | 85 | 390 | 36 | 45 | 232 | 50 | 147 |
| BWM-55 | Hexagon link | 55 mm | 87.5 | 390 | 36 | 45 | 234.5 | 50 | 147 |
| BWM-60 | Hexagon link | 60 mm | 93 | 390 | 36 | 45 | 240 | 50 | 147 |
| BWM-65 | Hexagon link | 65 mm | 97.5 | 390 | 36 | 45 | 244.5 | 50 | 147 |
| BWM-70 | Hexagon link | 70 mm | 104.5 | 390 | 36 | 45 | 251.5 | 50 | 147 |
| BWM-75 | Hexagon link | 75 mm | 113 | 390 | 36 | 45 | 260 | 50 | 147 |
| BWM-80 | Hexagon link | 80 mm | 119.5 | 390 | 36 | 45 | 266.5 | 50 | 147 |
| BWM-85 | Hexagon link | 85 mm | 130 | 390 | 36 | 45 | 277 | 50 | 147 |
| BWM-90 | Hexagon link | 90 mm | 135.5 | 390 | 36 | 45 | 282.5 | 50 | 147 |
| BWM-95 | Hexagon link | 95 mm | 143 | 390 | 36 | 45 | 290 | 50 | 147 |
| BWM-100 | Hexagon link | 100 mm | 148 | 390 | 36 | 45 | 295 | 50 | 147 |
Product brochure
What is a backup wrench?
A backup wrench is a safety tool used during bolting to prevent the back nut from rotating, ensuring accurate torque application and reducing operator risk.
Why are backup wrenches important in bolting applications?
They provide safety and control, preventing unwanted nut rotation that could cause equipment damage or unsafe working conditions.
Can backup wrenches be rented or purchased from KASI?
Yes. KASI offers backup wrenches for both rent and sale, allowing customers to choose the best option for their project needs.
What industries commonly use backup wrenches?
Backup wrenches are widely used in oil & gas, power generation, mining, and manufacturing, especially during flange bolting and maintenance operations.
Are backup wrenches available in Canada and Alberta?
Yes. KASI supplies backup wrenches across Canada, with localized support and service from Edmonton, Alberta. Fast delivery and customer service guaranteed.
