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

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 Number	CRBTF305-41A
Measurement System	Metric
Bearing Type	Roller Bearing
Roller Bearing Type	Crossed
For Load Direction	Combined Load
Construction	Single Row
Seal Type	Open
Bore Diameter	30 mm
Outer Diameter	41 mm
Width	5 mm
Holes	With Holes
Ring Material	Steel
Roller Material	Steel
Basic Dynamic Load Rating(C)	1770N
Basic Static Load Rating (Co)	1970N
Lubrication	Required
Shaft Mount Type	Press Fit
Temperature Range	0 -230 °F
ABEC Rating	ABEC5/7/9 (P5,P4,P2)
RoHS	Compliant
REACH	Compliant
Weight	0.022kg

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 Size		Basic Load Rating(N)		Inner Ring Mounting Hole		Outer Ring Mounting Hole		Reference Weight(Kg)
	Inner Diameter	Outer Diameter	Width	Chamfer	Mounting Size		Dynamic	Static	Hole Center	Hole size	Hole Center	Hole size	Reference Weight(Kg)
	d	D	B	r(min)	da	Da	Cr	Cor	dn	do	Dn	Do	Wt ≈
RJ40	8	40	8	0.3	26	28	3020	3780	20	4-M3	34	6-ф2.8-ф4.6/凵2.8	0.06
RU208	8	44	8	0.3	26	32	3020	3780	16	4-M3	38	4-ф3-ф 5/凵3	0.08
RU28	10	52	8	0.3	24	29.5	2900	3400	16	4-M3	42	6-ф3.4-ф6.5/凵3.3	0.12
RU42	20	70	12	0.6	37	47	7350	8350	28	6-M3	57	6-ф3.4-ф6.5/凵3.3	0.29
RU52	30	80	12	0.6	46.5	58.5	8610	10600	35	6-M3	67	6-ф3.4-ф6.5/凵3.3	0.40
RU66	35	95	15	0.6	59	74	17500	22300	45	8-M4	83	8-Φ4.5-Φ 8/凵4.3	0.62
RU85	55	120	15	0.6	79	93	20300	29500	65	8-M5	105	8-Φ5.5-Φ9.5/凵5.4	1.00
RU124	80	165	22	1	114	134	33100	50900	97	10-M5	148	10-Φ5.5-Φ9.5/凵5.4	2.60
RU178	115	240	28	1.5	161	195	80300	13500	139	12-M8	217	12-Φ8.6-Φ14/凵8.6	6.80
CRBTF105A	10	43	5	0.15	12.5	38.5	2800	2500	16	6-M2.5	35	6-ф2.8-ф4.6/凵2.8	0.09
CRBTF305A	30	63	5	0.15	33.5	58.5	5040	4500	36	8-M2.5	55	8-ф2.8-ф4.6/凵2.8	1.20
CRBT305-41A	30	41	5	0.15	33.5	36.5	3640	3250	-				0.08
RA5008C	50	66	8	0.5	53.5	60.5	5100	7190	-				0.08
RA6008C	60	76	8	0.5	63.5	70.5	5680	8680	-				0.09
RA7008C	70	86	8	0.5	73.5	80.5	5980	9800	-				0.10
RA8008C	80	96	8	0.5	83.5	90.5	6370	11300	-				0.11
RA9008C	90	106	8	0.5	93.5	100.5	6760	12400	-				0.12
RA10008C	100	116	8	0.5	103.5	110.5	7150	13900	-				0.14
BNAT105	10	21	5	0.2	12.5	18.5	1100	800	-				0.009
BNAT205	20	31	5	0.2	22.5	28.5	1500	1400	-				0.015
BNAT305	30	41	5	0.2	32.5	38.5	1900	2100	-				0.021
BNAT408	40	56	8	0.2	42.5	53.5	4200	5800	-				0.027
BNAT505	50	61	5	0.2	52.5	58.5	2400	3400	-				0.032
BNAT555	55	66	5	0.2	57.5	63.5	2500	3700	-				0.035
BNAT805	80	91	5	0.2	82.5	88.5	3000	5400	-				0.05
BNAT905	90	101	5	0.2	92.5	98.5	3100	6000	-				0.056

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