Frame Machines for Body Shops: Frame Racks vs. Frame Pullers and How to Choose
Full frame machines vs. portable frame pullers and straighteners: what each does, what a body shop needs, and what they cost.
Quick answer: A frame machine (frame rack or bench) holds a damaged vehicle in place and pulls the structure back into position, so it suits a collision shop doing structural repair. A frame puller or straightener is smaller and cheaper, and handles localized pulls on body panels and frames. Choose by the size of repairs you take on, your bay space, and the vehicles you work on.
See every model on our auto body frame machines, pullers and straighteners page.
What a frame machine does
After a collision, a vehicle's frame or unibody can be pushed out of position. A frame machine anchors the vehicle with clamps and chains, then uses hydraulic towers or rams to pull the damaged area back toward its correct dimensions. Technicians measure as they pull until the structure is back within the manufacturer's specifications.
Frame machines vs. frame pullers and straighteners
- Full frame machines (racks and benches). A platform that holds the whole vehicle, with one or more pulling towers. Built for structural collision repair. Examples on our site include the Katool KT-198L, KT-299U and KT-310.
- Frame pullers and straighteners. Smaller units for localized pulls, often portable. Good for lighter collision work, panel pulls and shops that do not need a full rack. Examples include the Katool KT-CL150, KT-222, KT-YA260 and KT-SB288 (listed for trucks).
How to choose a frame machine
- Repair mix. If you take structural collision jobs, you need a full frame machine. If most work is panel and light frame damage, a puller or straightener may be enough.
- Vehicles. Check the vehicle length and weight each machine is listed for, especially if you work on trucks.
- Bay space. A frame rack needs room for the platform plus space to work around it and swing the towers. Measure before you order.
- Pulling setup. Look at the number of towers, how they move around the platform, and the clamps and chains included.
- Measuring. A frame machine pulls; you still need a way to measure. Check what measuring system is included or compatible.
- Power and air. Confirm what the hydraulic system needs at the bay.
Other auto body equipment
Most body shops pair a frame machine with a spot welder for panel replacement and dent pulling. The Katool KT-90E and KT-90E PRO are in the same collection. For lifting vehicles, see car lifts, and for general bay equipment, see shop equipment.
How much does a frame machine cost?
At the time of writing, frame pullers and straighteners on our site run from roughly $600 to $1,500, and full frame machines from roughly $9,200 to $13,000. Prices change, so check the auto body equipment page. Shipping is calculated at checkout.
Frequently asked questions
What is the difference between a frame machine and a frame straightener?
The terms overlap. A frame machine usually means a full rack or bench that holds the whole vehicle. A frame straightener or puller usually means a smaller unit for localized pulls.
Can a small shop use a frame machine?
Yes, if it has the bay space. Portable pullers and straighteners suit shops with less space or lighter collision work.
Do frame machines work on trucks?
Some do. Check the vehicle length and weight each model is listed for; the Katool KT-SB288 is listed for trucks.
Related
See all auto body equipment, car lifts and our car lift buying guide. Questions? Contact us.