Material: Gear: open-cell PU foam, pre-oiled with adhesive oil (H1 approval). Axle: stainless steel. Plain bearing.Module toothing according to DIN 867. Not for torque transmission. The lubrication gear can lubricate a gear or a gear rack. Preferably, the gear should be lubricated. The foam stores the lubricant and releases it in very small doses. The lubricant supply can be done automatically or manually, e.g. with a grease gun.Temperature range: -10°C to +80°C.