CRBB 12020 NN C8 P2 Bore 120 Mm, Split Outer Ring Type (CRBA) Crossed Roller Bearings, Open Type

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CRBB 12020 NN C8 P2

Bore Diameter:120 mm

Outside Diameter:170 mm

Width:20 mm

Weight:2.1 kg

Min. Order:1 Piece

The CRBB 12020 NN C8 P2 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 12020 NN C8 P2 bearing is a Split outer ring type (CRBA) crossed roller bearings, open type with an inner diameter of 120 mm , an outer diameter of 170 mm, a width of 20 mm. It typically uses P2 = (ISO Class 2 / ABEC-9) grade precision tolerances and 50Mn,42CrMo rings, GCr15 rolling mlement. It primarily bears radial, thrust and moment, Its dynamic radial rated load is approximately 44900 N, its static radial rated load is approximately 76900 N. Its dynamic axial rated load is approximately 175000 N, its static axial rated load is approximately 100000 N. It uses C8: Negative clearance standard radial clearance, NN: Open type type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

120 mm

Outside Diameter:

170 mm

Thickness:

20 mm

Weight:

2.1 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

44900 N

Static load Capacity, Radial (Cor):

76900 N

Dynamic load Capacity, axial:

175000 N

Static load Capacity, axial:

100000 N

Reference speed (Grease rpm):

410

Limiting speed (Oil rpm):

550

Specifications:

Structure:

Crossed Roller Bearings

Number of Rows:

One

Radial Clearance Trade No.:

C8: Negative clearance

Precision Rating:

P2 = (ISO Class 2 / ABEC-9)

Load Direction:

radial, thrust and moment

Bearing Material:

50Mn,42CrMo

Seals Type:

NN: Open type

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 12020 NN C8 P2 bearings ( 120 mm x 170 mm x 20 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 12020 NN C8 P2
Bearing Type	Split outer ring type (CRBA) crossed roller bearings, open 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	CRBB12020NNC8P2
Load	radial, thrust and moment
Seal symbol	NN: Open type
Accuracy class	P2 = (ISO Class 2 / ABEC-9)
Temperature - T(min) [°C]	-30
Temperature - T(max) [°C]	120
Interchangeable	HIWIN CRBB 12020 NN C8 P2
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]	120
D Φ Outside [mm]	170
T,B Width [mm]	20
d_OH Oil Holes [mm]	2.5
C_r Radial Dynamic [N]	44900
C_0r Radial Static [N]	76900
C_a Dynamic Axial [N]	175000
C_0a Static Axial [N]	100000
m Weight [kg]	2.1
n_B Reference speed (grease) [r/min]	410
n_G Limiting speed (oil) [r/min]	550
Mounting dimensions - da [mm]	136
Mounting dimensions - du [mm]	131
Mounting dimensions - Da [mm]	153
Ca max Fillet Radius [mm]	1.5
Td max Idling torque [Nm]	1.3

The CRBB 12020 NN C8 P2 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 12020 NN C8 P2 ( 2.1 kg Mass, ID: 120 mm OD: 170 mm WD: 20 mm , One Rows , C8: Negative clearance Radial Clearance , P2 = (ISO Class 2 / ABEC-9) Accuracy Class , 50Mn,42CrMo Material , 44900 Radial dynamic , 76900 Radial static ), Just click the button " Contact Now " to mention your purchase Requirement , Quantity and Contact Method of your requested Bearing Item No. CRBB 12020 NN C8 P2. 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 12020 NN C8 P2 Bore 120 Mm, Split Outer Ring Type (CRBA) Crossed Roller Bearings, Open Type

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