RA8008 80x96x8mm-Crossed Roller Bearings

With the Cross-Roller Bearing, cylindrical rollers are arranged crosswise, with each roller perpendicular to the adjacent roller, in a 90 ゜ V groove, separated from each other by a spacer retainer. This design allows just one bearing to receive loads in all directions including, radial, axial and moment loads.

● High Rotation Accuracy of RA 8008/CRBS808AUUE08 Cross Roller Bearing

The spacer retainer fitting among cross-arrayed rollers prevents rollers from skewing and the rotation torque from increasing due to friction between rollers. Unlike conventional types using steel sheet retainers, the Cross- Roller Ring does not cause displacement or locking of rollers and provides a stable rotation torque.

Since the inner and outer rings are designed to be separable, the bearing clearance can be adjusted. In addition, highly accurate rotary motion is ensured through adjusting the bearing clearance to provide a preload.

● Easy Handling

The inner and outer rings, which are separable, are secured to the Cross-Roller Ring body after the rollers and spacer retainers are installed. This procedure prevents the rings from separating from each other. Thus, it is easy to handle the rings when installing the Cross-Roller Ring.

● Skewing Prevention

The spacer retainer keeps rollers in their proper position, thereby preventing them from skewing. This eliminates friction between rollers, and therefore secures a stable rotation torque.

● Significantly Increased Rigidity (Three to Four times Greater)

Unlike the thin angular ball bearings installed in double rows, the cross array of rollers allows a single Cross-Roller Ring unit to receive loads in all directions, increasing the rigidity to three to four times greater than the conventional type.

When you purchase the crossed roller bearings, please confirm the designation first.

1.  Model RU (Integrated Inner/Outer Ring Type) 

2. Model RB (Separable Outer Ring Type for Inner Ring Rotation)

3. Model RE (Separable Inner Ring Type for Outer Ring Rotation)

4. USP-Grade Series of Models RB/RE

5. Model RA (Separable Outer Ring Type for Inner Ring Rotation)

6. Model RA-C (Single-Split Type)

Features of Crossed Roller Bearings RA8008/CRBS808AUUE08

1. Excellent rotation accuracy

2. Simplified operation and installation

3. Withstand large axial and radial loads

4. Significantly save installation space

5. High speed capability

EASIER designs and manufactures a variety of crossed roller bearings that can handle radial, thrust and moment loads at the same time. These compact bearings feature rollers crossed at right angles between inner and outer rings.

-- Widely used in machine tools, industrial robots and medical equipment because of their high rotational accuracy.

-- Roller guide options include a cage or separator as well as a full complement design. Both the cage and separator styles offer a small coefficient of friction for high-speed rotation. Full complement bearings handle heavy loads at low speeds.

-- Sealed and open designs are available. Sealed bearings incorporate synthetic rubber seals to protect against dust, dirt and grease.

E-mail: sales@xrbearing.com, brandbearings@gmail.com

Skype:brandbearings

Whatsapp: 0086-13280450757

www.electricallyinsulatedbearings.com