CRBT305-41A 30X41X5mm Thin Wall Crossed Roller Bearing Robot Miniature Manipulator Surveillance Camera Bearings

Brand Name:CNBTZC or OEM
Certification:IATF16949:2016
Model Number:CRBT305A
Minimum Order Quantity:1000
Delivery Time:2-4 weeks
Payment Terms:L/C,T/T
Contact Now

Add to Cart

Verified Supplier
Address: No.502,Xinxing Third Road,Cixi Intelligent Home Appliance High Tech Industrial Development Zone, Zhejiang,China
Supplier`s last login times: within 21 hours
Product Details Company Profile
Product Details

CRBTF305A 30X63X5mm Thin Wall Crossed Roller Bearing Compact Hand Robot Joint Bearing

CRBT305-41A 30X41X5mm Thin Wall Crossed Roller Bearing Miniature Manipulator Surveillance Camera Bearings

The CRBTF305-41A bearing is designed for high-precision rotational motion, featuring crossed cylindrical rollers arranged at right angles to provide exceptional rigidity and load-bearing capacity. Key features include:

  • Outer Diameter:41 mm
  • Bore Diameter: 30 mm
  • Width:5 mm
  • Structure: Integrated compact design supporting radial, axial, and moment loads in any direction.
  • Installation: Simplified by eliminating the need for a mounting flange.

The CRBT305-41A bearing excels in applications requiring high performance and reliability, offering superior stiffness and load capacity while simplifying installation.


Part NumberCRBTF305-41A
Measurement SystemMetric
Bearing TypeRoller Bearing
Roller Bearing TypeCrossed
For Load DirectionCombined Load
ConstructionSingle Row
Seal TypeOpen
Bore Diameter30 mm
Outer Diameter41 mm
Width5 mm
HolesWith Holes
Ring MaterialSteel
Roller MaterialSteel
Basic Dynamic Load Rating(C)1770N
Basic Static Load Rating (Co)1970N
LubricationRequired
Shaft Mount TypePress Fit
Temperature Range0 -230 °F
ABEC RatingABEC5/7/9 (P5,P4,P2)
RoHSCompliant
REACHCompliant
Weight0.022kg

What's the Performance Features of CRBT305-41A Crossed Roller Bearing?


CRBT305-41A is a thin-walled cross roller bearing, primarily used in industrial scenarios that demand high precision and lightweight design.

  • Lightweight Design: Compared to traditional models, its weight is reduced by approximately 62%, with a cross-section height of only 5 mm, making it suitable for compact space applications.
  • High Rigidity: The cross-roller structure can withstand axial, radial, and overturning moment loads, offering 3-4 times higher rigidity than traditional bearings.
  • High Precision: The precision grade can reach P2/P4/P5 levels, making it ideal for precision equipment such as robotic joints, medical instruments, and more.

What's the Applications of the CRBT305-41A​ Crossed Roller Bearing?


The CRBT305A cross roller bearing, with its compact design (inner diameter 30mm × outer diameter 41mm × thickness 5mm), high rigidity, and high load capacity, is primarily used in the following fields:


1. Industrial Robots

  • Joint Components: Used in the rotary joints of collaborative robots, humanoid robots, and robotic arms, providing high-precision positioning and low-friction operation while ensuring stable repetitive motion .
  • End Effectors: Suitable for welding, handling, and other applications, meeting lightweight and miniaturization requirements .

2. Precision Machine Tools and Processing Equipment

  • CNC Rotary Tables: Used in five-axis machining centers and mill-turn composite machines, ensuring precise indexing and rigid support .
  • Grinding Machines and Testing Equipment: Such as universal testing machines and compression testing machines, ensuring balanced loads during processing or testing.

3. Medical and Laboratory Equipment

  • Imaging Equipment: Used in rotating components of CT scanners and optical inspection instruments, meeting low-noise and high-speed requirements .
  • Reverse Osmosis Systems: Applied in precision transmission components of liquid handling systems.

4. Automation and Specialized Equipment

  • Semiconductor Manufacturing: Used in precision motion control modules of lithography machines and wafer cutting machines
  • Radar and Communication Equipment: Supports smooth rotation of pan-tilt units, antennas, and similar components .
  • Drones and Robotic Joints: Suitable for lightweight designs, such as drone gimbal stabilization systems.

5. General Industrial Applications

  • Textile Machinery: Used in transmission components of textile equipment and looms .
  • Chemical and Environmental Equipment: Applied in corrosive environments such as chemical pumps, vibrating screens, and sludge scrapers.

Key Features and Suitability

  • Lightweight Design: Ultra-thin profile (only 5mm thick) makes it ideal for space-constrained applications.
  • Composite Load Capacity: Capable of simultaneously withstanding radial, axial loads, and overturning moments, making it suitable for complex working conditions.

CRB Series (Integrated Inner/Outer Ring Type) Crossed Roller Bearing

I. Structural Characteristics

Split Outer Ring and Integral Inner Ring Design

  • The outer ring is divided into two parts, while the inner ring is a single-piece structure, facilitating installation and clearance adjustment.
  • Features an equal cross-section thin-walled design, with both inner and outer ring thickness minimized to suit compact space applications.

Rolling Element Arrangement

  • Cylindrical rollers are arranged in a 90° cross pattern, with spacers maintaining their spacing to prevent friction and locking phenomena.

II. Performance Advantages

High Load-Carrying Capacity

  • Capable of simultaneously withstanding radial, axial loads, and overturning moments, making it suitable for heavy-load applications (e.g., cranes, construction machinery).

High Rigidity and Precision

  • Offers 3-4 times higher rigidity than traditional bearings, with rotational accuracy reaching P4 and P2 levels, ideal for precision equipment (e.g., CNC machine tools, medical instruments).

Lightweight and Compactness

  • Extremely thin walls and reduced weight make it suitable for weight-sensitive applications such as robotic joints and manipulators.

High-Speed Performance

  • Low-friction design supports high-speed rotation (e.g., DD motors, high-speed indexing tables).

III. Typical Application Scenarios

Application Field

Suitable Equipment Examples

Key Matching Features

Industrial Robotics

Joints, rotating parts of robotic arms

Lightweight, high precision, high rigidity

Medical Equipment

Surgical robots, imaging equipment

Low noise, high rotational accuracy

Heavy Machinery

Cranes, port equipment

High load capacity, anti-overturning ability

Semiconductor Manufacturing

Precision rotary tables, IC manufacturing equipment

Ultra-thin structure, high stability




Bearing Number
Dimensions(mm)Mounting SizeBasic Load Rating(N)Inner Ring Mounting HoleOuter Ring Mounting HoleReference
Weight(Kg)
Inner DiameterOuter DiameterWidthChamferDynamicStaticHole CenterHole sizeHole CenterHole size
dDBr(min)daDaCrCordndoDnDoWt ≈
RJ4084080.3262830203780204-M3346-ф2.8-ф4.6/2.80.06
RU20884480.3263230203780164-M3384-ф3-ф 5/30.08
RU28105280.32429.529003400164-M3426-ф3.4-ф6.5/3.30.12
RU422070120.6374773508350286-M3576-ф3.4-ф6.5/3.30.29
RU523080120.646.558.5861010600356-M3676-ф3.4-ф6.5/3.30.40
RU663595150.659741750022300458-M4838-Φ4.5-Φ 8/4.30.62
RU8555120150.679932030029500658-M51058-Φ5.5-Φ9.5/5.41.00
RU1248016522111413433100509009710-M514810-Φ5.5-Φ9.5/5.42.60
RU178115240281.5161195803001350013912-M821712-Φ8.6-Φ14/8.66.80
CRBTF105A104350.1512.538.528002500166-M2.5356-ф2.8-ф4.6/2.80.09
CRBTF305A306350.1533.558.550404500368-M2.5558-ф2.8-ф4.6/2.81.20
CRBT305-41A304150.1533.536.536403250-0.08
RA5008C506680.553.560.551007190-0.08
RA6008C607680.563.570.556808680-0.09
RA7008C708680.573.580.559809800-0.10
RA8008C809680.583.590.5637011300-0.11
RA9008C9010680.593.5100.5676012400-0.12
RA10008C10011680.5103.5110.5715013900-0.14
BNAT105102150.212.518.51100800-0.009
BNAT205203150.222.528.515001400-0.015
BNAT305304150.232.538.519002100-0.021
BNAT408405680.242.553.542005800-0.027
BNAT505506150.252.558.524003400-0.032
BNAT555556650.257.563.525003700-0.035
BNAT805809150.282.588.530005400-0.05
BNAT9059010150.292.598.531006000-0.056

If you need more detailed information , feel free to ask!


China CRBT305-41A 30X41X5mm Thin Wall Crossed Roller Bearing Robot Miniature Manipulator Surveillance Camera Bearings supplier

CRBT305-41A 30X41X5mm Thin Wall Crossed Roller Bearing Robot Miniature Manipulator Surveillance Camera Bearings

Inquiry Cart 0