Eccentric Cam Pin for Sliding Door Rollers Knurled Head with Cross Slot

Product Description:

We make these Eccentric Cam Pin for Sliding Door Rollers Knurled Head with Cross Slot from Qimao Metal Manufacturer ,use low-carbon steel, cold-forged, so the grain structure follows the shape rather than getting cut across. That matters because these pins see a fair bit of wear over the life of a door, and forged parts just hold up better in that sort of use. The head measures about 7.5 mm across with a flower knurl rolled into the outside. That knurling is mainly there so you can grip it with your fingers when making small adjustments, but it also helps if you’re wearing gloves, which a lot of installers do. The shaft is 6 mm, ground smooth, no threads. At the bottom there’s a cross slot, about 3 to 5 mm deep, blind, so it doesn’t go all the way through. That’s where the screwdriver goes. Zinc plating is what we put on most of these, either clear or yellow depending on what the customer wants for that particular job.

Specification:

Products Details:

Straightforward specs on Eccentric Cam Pin for Sliding Door Rollers Knurled Head with Cross Slot. Steel is a standard low-carbon grade, cold-headed to shape. Hardness runs about 150 to 180 HV, which is where it ends up straight out of the forming press. We don’t heat treat these afterwards unless someone specifically asks for it, and in this application it’s usually not necessary. The head is 7.5 mm, the shaft 6 mm ground to about plus or minus five hundredths of a millimeter. Slots are cut with a broaching tool right after forming, and the depth is set to stop short of punching through. Plating is trivalent zinc, salt spray around 72 hours, which covers most interior and exterior residential door applications. Weight per piece is about 3.08 grams. Pretty light, but that’s normal for this size. Packaging is either bulk boxes or poly bags with labels.

Product Feature:

• The Eccentric Cam Pin for Sliding Door Rollers Knurled Head with Cross Slot head’s got a flower knurl around the outside, which gives you good grip when you’re making adjustments. Some of our customers specifically ask for this type of knurl over straight splines because it’s easier on the fingers.

• Cross slot at the base is blind, not through. That means you don’t lose any strength in the shaft. If it went all the way through, you’d have a weak point right where the pin sees the most stress.

• Forged construction, not machined from bar. The grain flow stays intact, and the surface finishes up denser than what you get with machining.

• Shaft is ground after forming, so it’s smooth and runs freely in the roller bushing. No rough spots that could cause binding or accelerate wear on the nylon bushings.

• Zinc plating is standard, but we can swap to other finishes if the application calls for it. Some customers want black oxide for interior use, others go with a powder coat for outdoor applications.

Product Application:

• Sliding glass doors, the heavy ones used in storefronts or patio installations. The Eccentric Cam Pin for Sliding Door Rollers Knurled Head with Cross Slot sits in the bottom roller bracket and you turn it to lift or lower the door so it tracks straight.

• Aluminum window systems, especially the tilt-and-slide type common in Europe. The adjustment mechanism works the same way, just smaller scale.

• Shower doors, the frameless glass type. Those get adjusted a lot during installation because the floor is rarely perfectly level.

• Wardrobe sliding doors, the ones with three or four panels that have to align at the same height. Each roller gets a separate cam pin adjustment.

• UPVC doors and windows, which use these as part of the standard roller hardware kit. Replacement parts are a steady market because the pins do wear out after a few years of daily use.

• Barn door hardware, the residential type that’s become popular lately. The same principle applies, just heavier duty.

• Repair and maintenance. People lose these, strip the slots, or bend them. We get repeat orders from hardware distributors who stock replacement cam pins.

• OEM supply to roller manufacturers. They buy these in bulk and assemble them into complete roller units before shipping to door factories.