Doocar Auto Engineering Co., LTD

Truck O Liner frame press is a professional frame repair systems for heavy vehicles, it is universal collision repair equipment for chassis repair in the world. The frame press is ideal for straightening heavy and light trucks, trailers and buses.

The Truck-O-Liner frame straightening and repair system, through the combination of Y-direction press, Z-direction press, frame locker, and C-clamp, can effectively deal with lateral bending, vertical bending, distortion, Diagonal deformation of the frame (including hanging grass) and partial grass frame steel beam deformation are straightened and repaired efficiently. The equipment is made of high-strength alloy steel, which fully guarantees the strength of the equipment during the straightening and repair of the frame of the commercial vehicle; the US high-pressure hydraulic system is powerful and powerful, which can easily repair the damaged frame.

Press/pull trolley D025ST

DO25ST press-pull trolley Y direction press, equipped with 25 tons of high-pressure hydraulic cylinder imported from the United States, has strong power, easy and flexible movement, equipped with heavy-duty moving wheels, and a unique center of gravity optimization design, which can be easily operated by one operator.


Counterstay trolley

DO26ST counterstay trolley (Y direction press), equipped with heavy-duty moving wheels, and a unique optimized center of gravity design, which can be easily operated by one operator.


Press/pull trolley D025ST and Counterstay trolley DO026ST working diagram

Hydraulic kit

DOHA25 hydraulic kits can be matched with DO26ST counterstay trolley, turning DO26ST into a press and pull press with the same function as DO25ST press/pull trolley. After the DOHA25 component is installed with a hydraulic pump station, the damaged frame can also be straightened and repaired in front, rear, left, right and diagonal directions.




After the DOHA10 hydraulic kits is equipped with a hydraulic pump station, the damaged frame can also be straightened and repaired in front, rear, left, right, and diagonal directions.

Hydraulic kit DOHA10 working diagram:


Vertical press DO2513 - Quick and easy Z vertical press

vertical press DO2513 is used to straighten the vertical deformation of the frame. It is equipped with a 25-ton high-pressure hydraulic cylinder imported from the United States. It has strong power, light overall weight and easy handling.

Vertical press DO2480 - Heavy Duty Z Vertical Press

DO2480 Z-direction vertical press can be matched with the frame locker and Y-direction press; it can effectively repair the Z-direction vertical deformation of the frame; it is equipped with a 25 Ton high-pressure hydraulic cylinder, which is powerful and easy to straighten; equipped with heavy duty moving wheels, it is easy to move; equipped with mechanical heightening and locking devices, it can perform hydraulic jacking and correction in a wide range and safely.

Straightening accessories basic set

The device can quickly fix the damaged vehicle frame on the ground track steel beam.

The configuration is complete, and it can safely support and lock the U-shaped frame.

Frame hook set for I-beam DO2030K

The frame locking device must be used in conjunction with the Z-direction vertical press, and it has an efficient correction and repair effect on vertical deformation, twist deformation, and diagonal deformation of the frame.

Frame anchoring set

The frame anchoring set must be used in conjunction with the Z-direction vertical press, and it has an efficient correction and repair effect on vertical deformation, twist deformation, and diagonal deformation of truck frame.

Frame hook set for semitrailers: quickly anchor the frame of semitrailers.

straightening and riveting C-clamps: 10T straightening and riveting C-clamps,

25T straightening and riveting C-clamps

50 Ton straightening and riveting C-clamps

50T straightening set frame

Truck O Liner C-clamps have the functions of straightening, riveting, bushing replacement, etc. The products cover the 10-ton C-clamps for repairing small local deformation of the frame, to the 50 ton C-clamps for large deformation and cold riveting of the frame clamp. It can meet the maintenance and body repair of heavy vehicles, can be used as a good supplement to existing equipment, and can be purchased and used independently.

Frame and cab straightening with the floor beam solution

The cab bench, frame press and straightening equipment as well as pulling tower can be quickly and easily fixed on the track of the I-beam by using the special fixturing kit. The floor beams are to be casted in the workshop floor. This gives the advantages of a ffexible work area, easy to get the vehicle onto the workplace, as well as level floor and ergonomic work heights.

Frame straightening with floor anchoring expander solution

It is very convenient to fix the cab bench, pulling tower, pulling chains etc. on the ground with expansion bolts and ground anchors.