Round needle/one-way Roller pin Bearing

Name Roller pin material GCR15 Bearing steel, stainless steel hardness HRC60-65 outer circle tolerance 3um length tolerance 200um verticality ≤ 15um end face runout ≤ 15um roundness ≤ 1um surface roughness ≤ Ra1um

The one-way Roller pin Bearing is equipped with a slender Roller, so the radial structure is compact. When the inner diameter size and load-bearing capacity are the same as other types of Bearing, the outer diameter is small, which is especially suitable for Bearing results with limited radial installation dimensions. Depending on the application, you can choose the Bearing without inner ring or Roller pin and cage assembly. At this time, the journal surface and the housing bore surface matching the Bearing directly serve as the inner and outer rolling surfaces of the Bearing. In order to ensure that the bearing capacity and running performance are the same as those of the Bearing with ferrules, the hardness, machining accuracy and surface quality of the raceway surface of the shaft or Bearing seat hole should be similar to those of the Bearing ferrules. This Bearing can only withstand radial loads.

For one-way Roller pin Bearing without inner or outer ring, a thin layer of grease can be applied to the rolling surface of the shaft or Bearing seat hole during installation, and the Roller pin can be attached to the grease of the device in turn. When putting the Roller pin, there should be a gap. On the circumference of the one-way Roller pin Bearing, the size of the gap should be 0.5mm.

It is specially pointed out here that as long as the outer ring of the one-way Roller pin Bearing is hit, because the outer ring wall is very thin, do not use a hand hammer to hit the device and press it in. Due to the uneven pressure when the hand hammer, the one-way Roller pin Bearing outer ring is only partially deformed.

The device is fitted with a one-way Roller pin Bearing, usually with an auxiliary sleeve. At this time, the auxiliary Roller or auxiliary sleeve supports the Roller pin to prevent the Roller pin from falling out. The journal supports the Roller pin with its own chamfer and gradually moves inward with the one-way Roller pin Bearing on the journal. Then the auxiliary Roller or auxiliary sleeve gradually withdraws until it is installed in the working position and stops.

The outer diameter of the auxiliary roller and the auxiliary sleeve should be 0.1-0.3mm smaller than the shaft diameter. During installation, first apply grease to the inner and outer surfaces of the Bearing outer ring, stick the Roller pin to the inner and outer surfaces, and then push the auxiliary Roller or sleeve instead of the journal or the Bearing inner ring into the outer ring hole to align its end face with the end face of the device shaft or the end face of the Bearing inner ring installed on the shaft, and then press it with a press or hand hammer.

The one-way Roller pin Bearing can also be installed in this way. Apply a thin layer of lubricating oil on the outer diameter of the auxiliary sleeve, insert the outer ring of the Bearing, make the auxiliary sleeve and the outer ring of the Bearing form an annular hole, and then install the Roller pin in the annular hole. After fitting the Roller pin, push out the auxiliary sleeve with the operating shaft.