Camlok LJ Non-Marking Plate Clamp, Leather or Rubber Pads

Lifting plate without leaving a mark: the LJ non-marking clamp

The Camlok LJ is a vertical plate clamp built to lift, turn and transport plate without marking or indenting the surface. It is intended for structural steel, stainless steel, iron, timber and aluminium plate and also for steel plates with extremely hard surfaces. Instead of teeth it uses pads, offered either as leather or rubber, chosen according to the material surface.

Two sizes are listed: the LJ500 for 25 to 500 kg and plate up to 10 mm, and the LJ1500 for 150 to 1500 kg and plate up to 20 mm. Each is catalogued with a leather and a rubber version with different article numbers. The product page states a 4:1 safety factor, 180 degree lifting capability and suitability for moist or dirty surfaces, including submerged plasma cutting.

What the LJ is designed to do

• Leather or rubber lined pads that protect stainless, aluminium and polished finishes
• Works on plates with a surface hardness over 300 Brinell
• Turns a plate from horizontal to vertical and back (180 degrees)
• Listed as tolerant of moisture and dirt, including submerged plasma cutting
• Design safety factor 4:1 and product group I2
• Not suitable for use with a two-leg chain sling (manual)

Technical specification

LJ variants and article numbers

LJ dimensions, mm

Conditions of use

Leather or rubber, 500 or 1500

Camlok says the pad type depends on the surface of the material. The LJ500 and LJ1500 differ in size only in the sheet, so the choice is between them by plate thickness (10 or 20 mm) and by load, then between the two pad materials. If you are unsure which pad suits your plate, the manufacturer asks buyers to contact its sales team for advice, and so do we before quoting.

Remember that no fitting with a two-leg chain sling is allowed for the LJ, so a pair on a sling is not an option; the manual specifies one clamp on the plate centre of gravity or two clamps with a lifting beam for long plates. The catalogue weights are per clamp: 3.5 kg for the LJ500 and 12 kg for the LJ1500.

Fitting, lifting and caring for the pads

Start by confirming the plate surface is free of grease, standing water, oil, scale, paint or film. With the sling slack, turn the lever clockwise to lock the jaws open, position the clamp over the centre of gravity right into the mouth, set the fixed jaw on the plate and turn the lever anticlockwise to LOCK. Lifting from horizontal, or lowering with the moving jaw on top, can make the fixed pad tilt; putting the fixed pad on top avoids it.

Pad care differs from a toothed clamp. Degrease carefully without contaminating the jaw faces, brush away grit with a stiff brush, lubricate moving parts with soft grease but keep it off the pads, and check the pad bond for tearing. The manual forbids solvents on the jaw surfaces, because they can affect the bond between pad material and metal, and says contaminated jaws must be replaced with genuine Camlok parts. The LJ spares list gives shell plates (pair) N4300008467 for the LJ500 and N4300002457 for the LJ1500, and screws removed in a repair are refitted with Studlock.

Stainless, aluminium and finished plate

The LJ is the clamp for stainless fabrication, aluminium plate, painted or polished steel and hard plate where teeth would scar the surface, such as stainless tank workshops and plasma or water-bath cutting tables. For other materials or special conditions such as high humidity, salt, caustic or alkaline air and temperature extremes, consult the supplier or manufacturer. Oil or coolant on the pads is the biggest practical risk, so keep them clean and dry.

Related clamps

Related items on the product page include the 92 series plate clamps, the CY hinged clamp, the HG high-grip clamp and the TJC twin jaw clamp. For heavier toothed lifting the CX is available; for sheets carried horizontally, see the THK clamp.

Related Camlok products: Camlok CH Horizontal Plate Clamp Pair, 1000-20000 kg, Camlok CX Heavy-Duty Hinged Plate Clamp, 150-10000 kg WLL, Camlok THK Thin Sheet Horizontal Plate Clamp, 750-9000 kg, Camlok CY Hinged Vertical Plate Clamp, 1000-3000 kg WLL, Camlok TTR Girder Stacking Clamp, 750-3000 kg WLL and Camlok BTG Concrete Pipe Lifting Clamp Set, 1500-3000 kg.

Documents and quotation

You can download the catalogue sheet and the LJ manual here. Quote the pad type (leather or rubber) with any request; availability and lead time are confirmed by Seven Star LLC, an independent supplier in Muscat, before you order.