- Laminated bumpers suit lighter use, moulded rubber suits general duty, steel-faced bumpers resist wear on busy docks, and sliding or progressive designs reduce friction and impact damage.
- Bumpers must project far enough to stop the trailer before it reaches the leveller or dock face, and sit at the right height for the trailers you use.
- Wheel guides help drivers centre trailers on the door and leveller; they need spacing to suit your vehicles and secure fixing into sound concrete.
- Bumpers are a wear item, so check them at every service and replace them before they wear through; guide prices are £120 to £480 per bumper excluding VAT.
What do dock bumpers do?
Dock bumpers are buffers fixed to the dock face that absorb the impact of a reversing trailer and stop it at the right distance from the building and the leveller. Without them, every trailer that backs on strikes the dock wall, the leveller front or the door surround directly.
Good bumpers protect three things:
- The building: the dock wall, the concrete edge and the door surround.
- The leveller: the front of the leveller and its lip hinge, which are costly to repair if struck repeatedly.
- The trailer: the rear frame and doors, which can be damaged by hitting concrete or steel.
They also set where the trailer stops, which matters for the shelter or seal and for how far the leveller lip has to reach. That makes bumper choice part of the dock design rather than an afterthought. Bumpers are also among the lowest-cost items on a dock, so keeping them in good condition is an economical way to protect much more expensive equipment. See our dock bumpers page for the types we supply and fit.
What types of dock bumper are there?
The main types of dock bumper are laminated, moulded rubber, steel-faced and sliding or progressive bumpers, and the right one depends on how many trailers use the bay and how much they move during loading.
- Laminated bumpers: layers of rubber, often cut from recycled tyre material, clamped between steel angles. They are economical and suit lighter or moderate use.
- Moulded rubber bumpers: solid rubber blocks in rectangular or D-shaped profiles. A common choice for general duty, with good impact absorption.
- Steel-faced bumpers: rubber behind a steel face plate. The steel resists wear from trailer frames, which suits busy docks and heavy use.
- Sliding or progressive bumpers: sliding faces move with the trailer as it rises and falls, reducing scraping wear, while progressive designs absorb impact over a longer travel.
A lot of bumper wear comes from friction as the trailer rises and falls on its suspension while it is loaded, not just from the initial impact. That is why steel-faced and sliding designs are often chosen for busy docks with heavy trailers.
A practical approach is to match the bumper to the number of trailers per day and the weight of the loading equipment, and to step up to steel-faced or sliding bumpers if you find yourself replacing rubber bumpers often.
How far should dock bumpers project?
Dock bumpers should project far enough from the dock face that a trailer stops against them before it can touch the leveller front, the dock edge or the door surround, while still letting the leveller lip rest well onto the trailer bed. The exact projection depends on the leveller, the lip length and the shelter or seal.
Too little projection and the trailer hits the leveller or the building. Too much and the gap between the trailer and the dock grows, so the lip has less bearing on the trailer bed and shelters or seals may not close properly. A swing lip is typically about 400 to 500 mm and a telescopic lip commonly extends 500 to 1,000 mm, so bumper projection and lip reach have to be worked out together.
When you replace bumpers, match the projection of the originals unless the dock has changed. Fitting thicker bumpers without checking can stop a lip reaching the trailer bed properly.
Where should dock bumpers be positioned?
Dock bumpers are normally fitted in a pair, one either side of the leveller, at a height and spacing that suit the rear frames of the trailers you use. Positioning them is a balance between protecting the leveller, meeting the trailer's strong points and leaving room for the lip to work.
- Height: set so the bumpers meet the trailer's rear frame across the range of bed heights you handle. Taller bumpers, or extra bumpers, help where trailer heights vary widely. Include low-bed and container chassis when you set heights, as they may meet the bumpers at a different point.
- Spacing: wide enough to clear the leveller lip and the trailer doors, but close enough to meet the trailer's rear frame.
- Relation to the leveller: the bumpers must stand proud of the leveller front and lip hinge, so the leveller is never the first point of contact.
- Edge-of-dock levellers: bumpers are fitted either side of the unit, with the same rule that the trailer touches the bumpers first.
Vertical bumpers, mounted upright rather than horizontally, can be useful where trailer heights vary a great deal, because they present a face across a taller band.
What do wheel guides do and how are they sized?
Wheel guides are steel rails fixed to the yard surface either side of the approach to a dock, which help drivers line the trailer up with the centre of the door and the leveller as they reverse. A trailer that arrives straight and centred seals better against the shelter, meets both bumpers squarely and gives the leveller lip an even bearing.
Sizing and fixing points:
- Spacing: set to suit the width across the wheels of the vehicles using the dock, with enough clearance that tyres are guided rather than scraped.
- Length: long enough to guide the rear wheels through the final part of the approach.
- Profile: flared or angled entry ends steer the wheels in rather than presenting a blunt end to the tyres.
- Fixing: heavy-duty anchors into sound concrete. Guides fixed into weak or broken surfacing will work loose.
- Visibility: painted or marked so drivers can see them in their mirrors and at night.
Wheel guides are not a substitute for good yard markings and lighting. Clear bay numbers, painted approach lines and lighting at the dock all help drivers line up first time, especially at night and in poor weather. Wheel guides also work well alongside a swing-arm dock light, which lets staff see into the trailer once its doors are open. See dock lights and wheel guides for the options.
When should dock bumpers be replaced?
Dock bumpers should be replaced before they wear through to their fixings or lose so much thickness that trailers reach the leveller or the dock face. They are a wear item, so regular replacement is normal on a working dock.
Signs that a bumper needs replacing:
- rubber worn, split or missing, especially along the top edge;
- steel face plates bent, loose or worn through;
- fixings loose, sheared or pulled out of the concrete;
- marks or damage on the leveller front, lip hinge or dock edge, showing trailers are getting past the bumpers;
- a pair worn unevenly, so trailers stop at an angle.
Replace bumpers in pairs where the wear is similar, so trailers still stop square. Check bumpers at every planned service and ask site teams to report damage. A bumper at a guide £120 to £480 is a small cost next to leveller repairs, which run from £220 to £2,600 per repair, excluding VAT. Ask for bumpers and wheel guides to be checked as part of your loading bay servicing.
How much do dock bumpers and wheel guides cost?
As a guide, dock bumpers cost £120 to £480 per bumper, and dock lights and wheel guides cost £280 to £950 per item, excluding VAT, supplied and fitted. The bumper range runs from simple laminated bumpers at the lower end to steel-faced and sliding designs at the upper end.
What moves the price:
- bumper type, size and projection;
- the number of bumpers per bay;
- the condition of the dock face, and whether fixings need concrete repairs first;
- wheel guide length and fixing into the yard;
- access, traffic management and any out-of-hours working.
Bumpers are often replaced alongside leveller or shelter work, which avoids a separate visit. For new installations, the survey and written quote are free and without obligation, and the quote is the fixed price. See our prices page for other dock equipment.
Do bumpers and wheel guides make the dock safer?
Bumpers and wheel guides support dock safety by controlling where the trailer stops and how it lines up, which protects the leveller, the shelter and the people working at the bay. They do not stop a vehicle pulling away early, which needs separate safeguards.
HSE guidance on loading says there must be safeguards against drivers driving away too early, with measures including traffic lights, vehicle or trailer restraints and the person in charge keeping the keys or paperwork until it is safe. Bumpers and wheel guides sit alongside these measures, not in place of them, and good alignment helps wheel-based vehicle restraints engage properly, because the wheel arrives where the restraint expects it. Under PUWER, dock equipment must also be maintained in a safe condition. For drive-away controls, see our guide to preventing drive-away and trailer creep.
Questions
How many dock bumpers does a loading bay need?
Most docks use a pair, one either side of the leveller, so the trailer meets both at once and stops square. Docks handling a wide range of trailer heights sometimes use taller or additional bumpers so every trailer meets rubber or steel rather than the dock face. The right number and layout depend on your trailers, the leveller and the dock face, and we confirm them at survey.
Are steel-faced bumpers worth the extra cost?
On busy docks they often are, because the steel face resists the scraping wear caused by trailers rising and falling during loading, which can wear through plain rubber. On lightly used docks, laminated or moulded rubber bumpers may be all you need. Look at how quickly your current bumpers wear and how many trailers use the bay before deciding, and ask for both options in the quote.
Can new bumpers be fitted to a damaged dock face?
Bumpers need sound concrete or steel to fix into, so a broken dock edge or crumbling concrete usually needs repairing first. Fixing new bumpers into weak concrete means they work loose quickly and may pull out under impact, leaving the leveller exposed. We look at the dock face at survey and include any repairs needed in the written quote, so you can see the full cost.
Do wheel guides suit every loading bay?
Wheel guides suit most docks where vehicles reverse onto a fixed door and leveller, as long as there is room in the approach and sound surfacing to fix into. They may not suit yards where the same area carries other traffic, or where the approach is very tight. We check vehicle sizes, the approach and the surfacing before recommending them, and suggest alternatives where they do not fit.