Truck locks are an easy way to retrofit brakes to an existing trolley or mobile platform, or as an alternative to braked castors. The truck locks have a foot operated pad that lowers a pad normally with a rubber surface down to the floor, raising the wheels slightly above the ground and providing a friction brake.
Also, called "trolley brakes".
Data-sheet for the Truck Locks as detailed below (Model BZTL5 above)
Link to online shop for Truck Locks
The truck lock acts as a brake, as the platform or trolley can no longer move once the truck lock is engaged. The truck lock can easily be disengaged, making it an ideal tool to keep a trolley stable, when loading or offloading. Please see the video below for an explanation.
Truck / Trolley Locks Description
A step-down foot-operated pedal moves a skid-resistant rubber pad into friction contact with the floor surface. This is done with a spring-loaded over-cam mechanism that does not lift the load and keeps the operating force low. It also means the load rating of the trolley is not relevant to the truck lock. A second step down pedal raises the footpad. The limited number of parts means there is less to maintain or go wrong.
Where a trolley has four swivel castors, two truck locks are required – one to be fitted at each end, either on the same side or diagonally opposite. Only one truck lock is required at the swivel end of a trolley that has two swivel and two fixed castors.
Mounted Height mm | Retracted Height mm | Code |
168 | 136 | BZTL1 |
168 | 136 | BZTL1 ISO |
195 | 155 | BZTL2 |
245 | 205 | BZTL3 |
245 | 205 | BZTL3ISO |
210 | 170 | BZTL6 |
As well as the range of truck locks above, we also have the following models that are generally held in larger stocks. Please note that the brackets are slightly different.
Quick Differences between the two models of Truck Locks from Merlin
Product Code | Extended Height mm | Retracted Height mm
| Top Plate Size mm |
CDFLN-4 | 151 | 125 | 120 X 120 |
CDFLN-5 | 180 | 154 | 120 X 120 |
CDFLN-6 | 210 | 170 | 120 X 120 |
CDFLN-8 | 255 | 215 | 120 X 120 |
BZTL1 | 168 | 136 | 152 x 114 |
BZTL2 | 195 | 155 | 152 x 114 |
BZTL3 | 245 | 205 | 152 x 114 |
BZTL4 | 205 | 170 | 152 x 114 |
BZTL5 | 151 | 125 | 120 x 120 |
BZTL6 | 210 | 170 | 120 x 120 |
For pre-production and development design, we would always recommend getting a sample truck lock/brake.
Side mounted Truck locks.

We now have a new range of Parking and Lifting Brakes
The main jack body is supplied unpainted for welding directly to your units before painting.
Depending on the model, they are available with a side-winding or top winding handle and either round or square baseplates, with a maximum stroke of 450 mm.
Lifting Jacks are another new range of high quality lifting Jacks and are designed to hold and lift loads up to 4000 kg
The main jack body is supplied zinc plated and comes complete with an inner fixing tube for welding directly to your unit.
They are available with a side-winding handle and either round or square baseplates, with a maximum lift of 375 mm.
Now available from our online Truck Lock or Trolley Brake shop

Truck Locks Online Shop
Specially designed devices to hold trucks or trolleys in a fixed position during loading or unloading. They are designed to enable a quick and easy change between the locked and free movement modes.
TRUCK LOCK / FLOOR LOCK MOUNTING
The principle on which they work requires a constant gap between the unit and the floor, so it is best to mount the truck lock close to a castor, ensuring that it does not interfere with the free movement and operation of the castor. This is critical to correct operation – mounting pads, between the top plate and underside of the trolley, may be necessary to achieve this.
A step down foot-operated pedal moves a skid resistant rubber pad into friction contact with the floor surface. This is done with a spring-loaded over-cam mechanism that does not lift the load and keeps the operating force low. It also means the load rating of the trolley is not relevant to the truck lock. A second step down pedal raises the footpad.
The limited number of parts means there is less to maintain or go wrong. Where a trolley has four swivel castors, two truck locks are required – one to be fitted as each end, either on the same side or diagonally opposite. Only one truck is required at the swivel end of a trolley that has two swivel and two fixed castors.
BZTL5-Truck Lock / Floor Lock
BZLT5 is a roll lock which is comprised of a pressed steel construction, with rubber foot pads of 80mm diameter. Mounting height 151mm, with retracted height of 125mm, 120mm x 120mm top plate,100mm X 100mm OR 85mm x 85mm bolt holes.
£27.41
BZTL6-Truck Lock / Floor Lock
BZTL6 is a roll lock which is comprised of a pressed steel construction, with rubber foot pads of 80mm diameter. Mounting height 210mm, with retracted height of 170mm, 120mm x 120mm top plate,100mm X 100mm OR 85mm x 85mm bolt holes.
£28.62
BZTL1-Truck Lock / Floor Lock
Pressed Steel Construction with a mounting height of 168mm. Retracted height 136mm. Plate size 115mm x 102mm with hole centres of 82/76mm x 67/76mm. Truck locks are NOT designed to carry any weight and are used as a form of brake.
£65.52
BZTL1ISO-Truck Lock / Floor Lock
Pressed Steel Construction with a mounting height of 168mm. Retracted height 136mm. Plate size 138mm x 110mm with hole centres of 105mm x 75/80mm. Truck locks are NOT designed to carry any weight and are used as a form of brake.
£65.52
BZTL2-Truck Lock / Floor Lock
Pressed Steel Construction with a mounting height of 195mm. Retracted height 155mm. Plate size 115mm x 102mm with hole centres of 82/76mm x 67/76mm. Truck locks are NOT designed to carry any weight and are used as a form of brake.
£67.55
BZTL2ISO-Truck Lock / Floor Lock
Pressed Steel Construction with a mounting height of 195mm. Retracted height 155mm. Plate size 138mm x 110mm with hole centres of 105mm x 75/75mm. Truck locks are NOT designed to carry any weight and are used as a form of brake.
£67.55
BZTL3-Truck Lock / Floor Lock
Pressed Steel Construction with a mounting height of 245mm. Retracted height 205mm. Plate size 115mm x 102mm with hole centres of 76/92mm x 67/76mm. Truck locks are NOT designed to carry any weight and are used as a form of brake.
£71.69
BZTL3ISO-Truck Lock / Floor Lock
Pressed Steel Construction with a mounting height of 245mm. Retracted height 205mm. Plate size 138mm x 110mm with hole centres of 105mm x 75/75mm. Truck locks are NOT designed to carry any weight and are used as a form of brake.
£71.69
BZTL4-Truck Lock / Floor Lock
Cast Iron construction with a mounting height of 205mm, retracted height 170mm. Plate size 152mm x 114mm with hole centres of 127mm x 63.5mm. Truck locks are NOT designed to carry any weight and are used as a form of brake
£87.91
BZTL7/L-Truck Lock / Floor Lock
Left Hand Operated, Pressed Steel construction with a mounting height of 381 mm, retracted height 346 mm. Side Mounted Plate size 114 mm x 165 mm high. Supplied un-drilled. Truck locks are NOT designed to carry any weight and are used as a form of brake
£119.88
BZTL7/R-Truck Lock / Floor Lock
Right Hand Operated, Pressed Steel construction with a mounting height of 381mm, retracted height 346mm. Side Mounted Plate size 114mm x 165mm high. Supplied un-drilled. Truck locks are NOT designed to carry any weight and are used as a form of brake
£119.88
BZLC75NYBJ-Nylon Plate Swivel Brake 75mm 350kg Load
A pressed steel swivel 'Lifting Castor'. This has a top plate fixing and is fitted with a white nylon wheel and double ball bearing. _x000D_\n_x000D_\nWheel diameter 75mm, tread width 40mm, overall height retracted 112mm, extended 120mm, plate size 108mm x 88mm, hole centres 80mm x 60mm. Load capacity 350kg.
£67.68
BZLC80NYBJ-Nylon Plate Swivel Brake 80mm 400kg Load
Pressed steel swivel 'Lifting Castor' with a top plate fixing fitted with a white nylon wheel with double ball bearing. Wheel diameter 80mm, tread width 40mm, overall height retracted 114mm, extended 120mm, plate size 105mm x 85mm, hole centres 80mm x 60mm. Load capacity 400kg.
£67.68
BZPJ11-Unplated Top Winding Parking/Lifting Jack. 1000kg Load
Unplated Top Winding Parking/Lifting Jack. Height Retracted 495mm, Height Extended 845mm, Box Size 50mm, Round Base Diameter 150mm, Load Capacity 1000kg
£95.55
BZPJ12-Unplated Top Winding Parking/Lifting Jack. 2000kg Load
Unplated Top Winding Parking/Lifting Jack. Height Retracted 515mm, Height Extended 965mm, Box Size 60mm, Round Base Diameter 150mm, Load Capacity 2000kg
£121.14
BZPJ13-Unplated Top Winding Parking/Lifting Jack. 3000kg Load
Unplated Top Winding Parking/Lifting Jack. Height Retracted 515mm, Height Extended 965mm, Box Size 80mm, Square Base Diameter 200 mm, Load Capacity 3000 kg
£144.10
BZPJ1-Unplated Side Winding Parking/Lifting Jack. 1000kg load
Unplated Side Winding Parking/Lifting Jack. Height Retracted 555mm, Height Extended 905mm, Box Size 50mm, Round Base Diameter 150mm, Load Capacity 1000kg
£180.01
BZPJ2-Unplated Side Winding Parking/Lifting Jack. 2000kg load
Unplated Side Winding Parking/Lifting Jack. Height Retracted 580mm, Height Extended 1030mm, Box Size 60mm, Round Base Diameter 150mm, Load Capacity 2000kg
£196.01
BZPJ5-Zinc Plated Side Winding Parking/Lifting Jack with Round Fixing Tube. 1000kg Load
Zinc Plated Side Winding Parking/Lifting Jack with Round Fixing Tube supplied with Inner Tube for welding. Height Retracted 405mm, Height Extended 655mm, Box Size 50mm, Round Base Diameter 150mm, Load Capacity 1000kg
£235.55