Sliding Window Plastic Roller

China Sliding Window Plastic Roller Manufacturers: 1). Material: Carbon Steel/ Chrome Steel Bearing + Plastic( POM/ NYLON) Injection; 2). Application: for Aluminium Door and Windows; Aluminium Hardware Accessories and other sliding applications; 3). Plastic Color: Various, as per Request; -- For any detailed inquiry of non-standard bearing rollers, pls contact us freely. We will make a response within 12 hours. Sliding Plastic Window Roller - Factory Direct Hot Sale Bearing rings: Dimension tolerance, geometric tolerances, and surface quality of bearing` s working surface will influent the operating noise. Naimei Bearing adopts precision CNC machining to dimension precision,  geometric tolerances, design drawing, mold making, grinding, cleaning,  assembly, testing, every link of strict checks, so as to ensure all our products are tested by our strict criteria. Balls:  The balls evenly with by the cage, often make rolling movement between 2 rings. The shape, size and number will directly influent bearing`s load tolerance and operating capability. We use high precision, small vibration steel ball. It`s surface must be strengthened, no bumps scratches, lacerations, pitting and notch. Cage: Enclose and move with all or part of the balls. It also be used to insulate the balls, guide the balls` movement and to improve lubrication performance inside