Send A Inquiry

Product Description


12288001 Medical equipment slewing bearing made in china 54.3*42*4.625inch

Technical Parameters:


Outline Dimensions and Weight

Outside Diameter of Outer Ring (De):54.3inch

Inside Diameter of Inner Ring (Di):42inch

Height of Overall Bearing Assembly (H):4.625inch

Height of Inner Ring (b)/Height of Outer Ring (h):3.625inch/3.625inch

Mounting Holes

Bolt Circle in Outer Ring (Fe):50.375inch

Number Holes in Outer Ring (Ne):30

Size of Hole in Outer Ring (φ1):1.062

Bolt Circle in Inner Ring (Fi):44.125inch

Number Holes in Inner Ring (Ni):36

Size of Hole in Inner Ring (φ2):1.062

Teeth Info:

External gear




Other Technical Parameters:

Roller/Ball: GCr15/GCr15SiMn

Seal:NBR,High temperature Seal


Race Hardeness:55-62HRC

Material  Hardeness:187-241HB

Tolerance (μm):+-800

Delivery time:Instock: 3days Outstock: 25-30days

Delivery way:  Sea freight , Air freight , World Express

Quality Level: P0 P6 P5 P4 P2

Main market:



Brand: OEM,Customized Logo,Brand as your request

Service: Reply Within 24hours


Cage and Holes:

The cage (or isolation block) adopts the full ball structure only when the load is large. The full ball four-point contact ball bearing has a large load-bearing capacity, but the friction resistance is large, and friction can easily cause scratches on the surface of the steel ball.

According to installation needs, the mounting holes can be designed as straight holes, counterbore holes, threaded blind holes, threaded through holes, etc.


12288001 is Ball slewing ring bearing small slewing bearing with inner teeth.

It composed of two seat rings, compact in structure and light in weight. The steel ball is in contact with the

arc raceway at four points and can bear axial force, radial force and overturning moment at the same time.

The slewing bearing be produced as your demands,

1 Offer the size for us, our technicist will design the bearing

2 Offer the type for us, If that is standard, we can produce directly

3 Offer the drawing for us, we can produce as the same as the drawing.

12288001 Advantages:

  1. Excellent rotation accuracy

The internal structure of the crossed roller bearing adopts the rollers arranged in a 90° crosswise arrangement.Spacers or spacers are installed between the rollers to prevent the rollers from observing each other when they are inclined.

In addition, there will be no contact or locking phenomenon on one side of the roller; at the same time, because the inner and outer rings are divided structures, the gap can be adjusted, even if preload is applied, high-precision rotation can be obtained.

  1. Simplified operation and installation

The outer ring or inner ring, which is divided into two parts, is fixed together after the rollers and cages are installed, so the operation during installation is very simple.

  1. Withstand large axial and radial loads

Because the rollers are arranged perpendicular to each other by spacers on the 90° V-groove rolling surface.

  1. Significantly save installation space

The size of the inner and outer rings of the crossed roller bearing is miniaturized to a minimum, especially the ultra-thin structure is close to the limit of small size, and has high rigidity, so it is most suitable for the joints or rotating parts of industrial robots, and the rotation of machining centers.

Workbenches, manipulator rotating parts, precision rotating tables, medical instruments, measuring instruments, IC manufacturing equipment, etc. are widely used.

  1. High speed capability
  2. Reduce shaft length and processing costs, thermal expansion causes limited changes in geometric dimensions
  3. Adopt nylon separator, low moment of inertia, low starting torque, easy to control angle indexing
  4. Optimize pre-tightening force, high rigidity, and high precision of guiding roller operation


– Excavators

– Drilling rigs

– Mining Equipments


– Offshore Equipments

– Vehicles

– Machine Tools

– Wind Turbines

Other Slewing bearing:

 Single row four point contact ball slewing bearing

 Single row crossed cylindrical roller slewing bearings

• Double row ball slewing bearings

Double row Roller/ball combination slewing bearing

Three-Row Roller Slew Ring Bearing

Additional Information

Weight 6156379795 kg



There are no reviews yet.

Be the first to review “12288001”

About us


Luoyang MC Bearing Technology Co.,Ltd (LYMC)
+86 13837949030




We are everywhere


Follow our activity

LYMC bearings are the perfect alternative to the most common and well-known brands.