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ru crossed roller bearing

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Company Information

Luoyang E-Find Precision Bearing Manufacturing Co., Ltd.

CN Manufacturer, Trading Company
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Quick Details

Precision Rating: P2P4P5
Place of Origin: LUOYANG
CAGE: Nylon Cage
Product Name: RU178cross roller bearing
Service: OEM Customized Services
Material: Gcr15
heat treatment: Customized
Model Number: RU178
Hardness: Quenching
Seals Type: DEALD
Bore Size: 115 - 116 mm
Type: BALL
Applicable Industries: Manufacturing Plant,Machinery Repair Shops,Construction works ,Energy & Mining
Number of Row: Single Row
Package: Wooden Box
Structure: Deep Groove
Application: Rotating Machine
Certificate: ISO
Packaging Detail: vacuum package Wrapped package wooden box package
Selling Units: Single item
Single package size: 25X25X3.8 cm
Single gross weight: 8.16 KG
Package Preview:,
Products Description
ru crossed roller bearing
With the cross roller bearing ,cylindrical roller are arranged crosswise ,with each roller perpendicular to the adjacent roller ,in a 90°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. Since the cross-roller ring achieves high rigidity and the precision can reach up P5 P4 P2,despite the minimum possible dimensions of the inner and outer rings,it is optimal for applications such as joints and swiveling units of industrial robots,swiveling table of machining centers .precision rotary tables,medical equipment,measuring instruments and IC manufacturing machines.
Since the mounting holes are provided, this model does not require a presser flange or housing .In addition because it has an integrated inner/outer ring structure and is equipped with washers ,its performance is minimally affected by the mounting procedure,ensuring stable rotation accuracy and torque.This model can be used for both inner-ring rotation and outer-ring rotation.

(main dimensions)
内径 d (mm)(inner ring)
外径 D (mm)(outer ring)
滚子节圆直径 (dp)
宽度(B B1) (mm) (width)
倒角 r(min)(chamfer)
靠肩尺寸(shoulder height)
Basic load rating(radial)
C (Kn)
重量(kg) weight
内套外套轴承钢GCr15 (inner jacket bearing steel GCr15)

Relation between the mounting
Inner ring
mounting holes
12-ɸ9hrough,ɸ14counterbore depth8.6
Outing ring
mounting holes
12-ɸ9hrough,ɸ14counterbore depth8.6
Product Process
  Rough and finish turning by CNC lathes. Each process will be checked according to the drawings. Especially for the oil groove, ellipse, triangle, outer circle(ring) allowance, inner circle(ring) allowance, and chamfer must meet the requirements of the drawing. Well prepared for next steps.

According to the drawings, the machining center is required to process. The key point is to level the countersink not to be uneven; the through hole be smooth without spirals; the threaded hole meets the requirements, can not drill bottom hole too large for easy & fast tapping. Hole chamfer requires angle, size and appearance all meet the requirements.

  Heat treatment will be done according to the types of row material.  Row material must ensure the hardness and heat treatment deformation are controlled within the qualified range.

  A: Surface: Make sure that the machine is cooled in place, control the surface(plane)
bending and parallel difference(tolerance). Pickling flaw detection for the first product to see whether there is burning damage
or crack.
   B: Outer diameter(ring): Control ellipse, triangle and size. When the product height is large, repeated grinding is needed .
  C: Inner diameter(ring): Control ellipse, wall thickness and taper. If the product height is large, the vertical difference should meet the requirements.
  D: Raceway: Due to the particularity of the product, it is necessary to grind at a fixed distance and ensure that the cooling is in place. The flaw detection of wall thickness for the sample should be qualified not less than 80%.

  Ensure chamfer, oil groove smooth and without vibration.

     100% finish grinding the surface, inner diameter and raceway. The key function is to improve the products’ accuracy, eliminate the ellipse and triangle deformation because of the tempering.

  All procedures should be processed strictly in accordance with the drawings. Special for the temperature difference during tempering; roughness and angle during raceway processing for outer&inner diameter should be 100% inspected.

Magnetic Particle Inspection: fully magnetizing to make the magnetic powder evenly poured on the product. Observing whether the magnetic powder is concentrated. There would be no concentrated or remaining magnetic powder for good products.
Q: Delivery time?
A: For Rotary Table Bearing, we have many on stock. If without stock, the delivery time is 7~40days. Also can be negotiated for urgent order.

Q: How to get quick quotation?
A: Just copy" i want to know Rotary Table Bearing price, my mobile number is ..." then we will call you or add your whatsapp.

Q: This is my first time to buy goods from China, can you help me?
A: Congrats! You find the right partener!
I know well all kinds of test report, documents for exporting and importing.

Company Profile
*Have been professional in researching, developing, producing & marketing high precision bearings since the year 2004;
*Many YRT & ZKLDF series bearings are on stock; Factory directly provide, most competitive price;
*Advanced CNC equipment, guarantee product accuracy & stability;
*One stop purchasing, product include cross roller bearing, rotary table bearing, robotic bearing, slewing bearing, angular
contact ball bearing, large and extra large custom made bearing, diameter from 20~9800mm;
*Excellent pre-sale & after sale service. We can go to customers’ project site if needed.
*Professional technical & exporting team ensure excellent product design, quotation, delivering, documentation & custom clearance.
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