CRBB 25040 WW C8 P4 Bore 250 Mm, Split Outer Ring Type (CRBA) Crossed Roller Bearings, Sealed Type

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CRBB 25040 WW C8 P4

Bore Diameter:250 mm

Outside Diameter:355 mm

Width:40 mm

Weight:14.4 kg

Min. Order:1 Piece

The CRBB 25040 WW C8 P4 Crossed roller bearings are suitable for high-precision, high-rigidity, and space-constrained rotary applications. Classic applications include industrial robot joints and positioners, CNC machine tool rotary tables and indexing heads, medical CT scanner rotating frames, radar antenna rotation mechanisms, precision measuring instruments, and aerospace simulation rotary tables.

The CRBB 25040 WW C8 P4 bearing is a Split outer ring type (CRBA) crossed roller bearings, sealed type with an inner diameter of 250 mm , an outer diameter of 355 mm, a width of 40 mm. It typically uses P4 = (ISO Class 4 / ABEC-7) grade precision tolerances and 50Mn,42CrMo rings, GCr15 rolling mlement. It primarily bears radial, thrust and moment, Its dynamic radial rated load is approximately 207000 N, its static radial rated load is approximately 391800 N. Its dynamic axial rated load is approximately 460000 N, its static axial rated load is approximately 890000 N. It uses C8: Negative clearance standard radial clearance, WW: Double sides Sealed type type, NBR (Nitrile Butadiene Rubber). together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

250 mm

Outside Diameter:

355 mm

Thickness:

40 mm

Weight:

14.4 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

207000 N

Static load Capacity, Radial (Cor):

391800 N

Dynamic load Capacity, axial:

460000 N

Static load Capacity, axial:

890000 N

Reference speed (Grease rpm):

200

Limiting speed (Oil rpm):

260

Specifications:

Structure:

Crossed Roller Bearings

Number of Rows:

One

Radial Clearance Trade No.:

C8: Negative clearance

Precision Rating:

P4 = (ISO Class 4 / ABEC-7)

Load Direction:

radial, thrust and moment

Bearing Material:

50Mn,42CrMo

Seals Type:

WW: Double sides Sealed type

Seal Material:

NBR (Nitrile Butadiene Rubber)

Rolling Mlement Material:

GCr15

Bore Type:

Cylindrical

Operating Temperature:

-30 to 120 °C

System of Measurement:

Metric

Rolling Element:

Cylindrical Rollers

Transaction Information:

Transport Package:

Standard Export Package

Service:

7*24 hour

Shipping Ways:

by Sea or Air

Country of Origin:

china

Stock:

30 Piece

Port:

Tianjin, Shanghai, Shenzhen, Guangzhou or Qingdao

Payment term:

by T/T in advance

Delivery time:

2-3 days for stock, 25-30 days for bulk production

Detailed description

CRBB 25040 WW C8 P4 bearings ( 250 mm x 355 mm x 40 mm) have the advantages of The rollers are arranged in a cross pattern, allowing them to withstand radial, axial, and overturning moments simultaneously. They offer high rigidity and rotational accuracy while compact and space-saving design, and easy installation, and are therefore widely used in the Industrial robots, CNC machine tools, medical equipment, precision measuring instruments and aerospace.

Part Number	CRBB 25040 WW C8 P4
Bearing Type	Split outer ring type (CRBA) crossed roller bearings, sealed type
Mounting Holes	Without mounting holes
Design	Split inner ring (two inner semi-rings and an outer ring), outer ring rotation
Rolling Element Type	Cylindrical Rollers
Rows NO.	One
Manufacturer Part Code	CRBB25040WWC8P4
Load	radial, thrust and moment
Seal symbol	WW: Double sides Sealed type
Seal Material	NBR (Nitrile Butadiene Rubber)
Accuracy class	P4 = (ISO Class 4 / ABEC-7)
Temperature - T(min) [°C]	-30
Temperature - T(max) [°C]	120
Interchangeable	HIWIN CRBB 25040 WW C8 P4
Inner/Outer Ring Material	50Mn,42CrMo
Rolling Element Material	GCr15
Axial internal clearance	C8: Negative clearance
C8 [µm]	-10 (min), 0 (max)
d φ Inside [mm]	250
D Φ Outside [mm]	355
T,B Width [mm]	40
d_OH Oil Holes [mm]	4
C_r Radial Dynamic [N]	207000
C_0r Radial Static [N]	391800
C_a Dynamic Axial [N]	460000
C_0a Static Axial [N]	890000
m Weight [kg]	14.4
n_B Reference speed (grease) [r/min]	200
n_G Limiting speed (oil) [r/min]	260
Mounting dimensions - da [mm]	289
Mounting dimensions - du [mm]	275
Mounting dimensions - Da [mm]	311
Ca max Fillet Radius [mm]	2
Td max Idling torque [Nm]	12.8

The CRBB 25040 WW C8 P4 Crossed roller bearings consist of inner and outer rings, cylindrical rollers, spacers, and seals. The rollers are arranged at 90° intervals within a V-shaped raceway, allowing for multi-directional load bearing even in a single row.

Crossed roller bearings can simultaneously withstand radial loads, bidirectional axial loads, and overturning moments. They possess extremely high rigidity and rotational accuracy, and their compact structure saves installation space, simplifying machine tool design.

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High quality CRBB 25040 WW C8 P4 ( 14.4 kg Mass, ID: 250 mm OD: 355 mm WD: 40 mm , One Rows , C8: Negative clearance Radial Clearance , P4 = (ISO Class 4 / ABEC-7) Accuracy Class , 50Mn,42CrMo Material , 207000 Radial dynamic , 391800 Radial static ), Just click the button " Contact Now " to mention your purchase Requirement , Quantity and Contact Method of your requested Bearing Item No. CRBB 25040 WW C8 P4. then click the button " Send " The web site will make your purchasing information sent to the supplier's mailbox, who will come to contact you upon they get your information at the first time.

CRBB 25040 WW C8 P4 Bore 250 Mm, Split Outer Ring Type (CRBA) Crossed Roller Bearings, Sealed Type

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