RE-Two-piece Inner Ring Type Precision Crossed Roller Bearings

RE-Two-piece Inner Ring Type (THK RE Series Crossed Roller Bearings)

THK Series RE

Model RE (Two-piece Inner Ring Type for Outer Ring Rotation)

LYNBC crossed roller bearings RE series (THK corresponding to RE series) is two-piece inner ring type for outer ring rotation, It is the new structure from THK RB design. Main dimensions are the same as model RB. With two-piece inner ring, and a outer ring integrated. It is used in locations where the rotational accuracy of the outer ring is required.

▲ The design’s of all these crossed roller bearings RE series are based on standard structures; LYNBC can design and manufacture many other similar structures in accordance to the special and particular requirements of their customers’. If our customer’s have specific requests then the customer should identify the structure, and mounting dimensions that are required. Please contact the LYNBC technical center if you need any assistance in this area.

THK Series RE (Two-piece Inner Ring for outer ring rotation )

Designation	Boundary Dimensions(mm)				Basic Load ratings(KN)		Weight (kg)
Designation	d	D	B1	rsmin	Cr	Cor	Weight (kg)
RE2008	20	36	8	0.5	3.23	3.1	0.04
RE2508	25	41	8	0.5	3.63	3.83	0.05
RE3010	30	55	10	0.6	7.35	8.36	0.12
RE3510	35	60	10	0.6	7.64	9.12	0.13
RE4010	40	65	10	0.6	8.33	10.6	0.15
RE4510	45	70	10	0.6	8.62	11.3	0.17
RE5013	50	80	13	0.6	16.7	20.9	0.29
RE6013	60	90	13	0.6	18	24.3	0.33
RE7013	70	100	13	0.6	19.4	27.7	0.38
RE8016	80	120	16	0.6	30.1	42.1	0.74
RE9016	90	130	16	1	31.4	45.3	0.81
RE10016	100	140	16	1	31.7	48.6	0.83
RE10020	100	150	20	1	33.1	50.9	1.45
RE11012	110	135	12	0.6	12.5	24.1	0.4
RE11015	110	145	15	0.6	23.7	41.5	0.75
RE11020	110	160	20	1	34	54	1.56
RE12016	120	150	16	0.6	24.2	43.2	0.72
RE12025	120	180	25	1.5	66.9	100	2.62
RE13015	130	160	15	0.6	25	46.7	0.72
RE13025	130	190	25	1.5	69.5	107	2.82
RE14016	140	175	16	1	25.9	50.1	1
RE14025	140	200	25	1.5	74.8	121	2.96
RE15013	150	180	13	0.6	27	53.5	0.68
RE15025	150	210	25	1.5	76.8	128	3.16
RE15030	150	230	30	1.5	100	156	5.3
RE16025	160	220	25	1.5	81.7	135	3.14
RE17020	170	220	20	1.5	29	62.1	2.21
RE18025	180	240	25	1.5	84	143	3.44
RE19025	190	240	25	1	41.7	82.9	2.99
RE20025	200	260	25	2	84.2	157	4
RE20030	200	280	30	2	114	200	6.7
RE20035	200	295	35	2	151	252	9.58
RE22025	220	280	25	2	92.3	171	4.1
RE24025	240	300	25	2.5	68.3	145	4.5
RE25025	250	310	25	2.5	69.3	150	4.97
RE25030	250	330	30	2.5	126	244	8.1
RE25040	250	355	40	2.5	195	348	14.8
RE30025	300	360	25	2.5	76.3	178	5.88
RE30035	300	395	35	2.5	183	367	13.4
RE30040	300	405	40	2.5	212	409	17.2
RE35020	350	400	20	2.5	54.1	143	3.9
RE40035	400	480	35	2.5	156	370	14.5
RE40040	400	510	40	2.5	241	531	23.5
RE45025	450	500	25	1	61.7	182	6.6
RE50025	500	550	25	1	65.5	201	7.3
RE50040	500	600	40	2.5	239	607	26
RE50050	500	625	50	2.5	267	653	41.7
RE60040	600	700	40	3	264	721	30.6

THK RE series crossed roller bearings are a type of bearing designed for high precision and rigidity in rotary applications. They are widely used in machine tools, robotics, and other demanding industries. Here's a breakdown of what you should know about them:

Key Features and Benefits

High Rigidity: The rollers are arranged in a crossed configuration (alternating at 90-degree angles). This unique design provides excellent rigidity in all directions (axial, radial, and moment).

High Precision: The crossed roller design minimizes deflection and provides smooth, accurate rotation. They are often used in applications requiring sub-micron positioning.

Compact Design: The design allows for a relatively compact size compared to other bearing types with similar load capacity.

High Load Capacity: The crossed roller arrangement effectively distributes the load, allowing for high load-carrying capacity in a small package.

Smooth Rotation: Precision machining and careful assembly contribute to smooth, low-friction rotation.

Easy Installation: The integrated structure simplifies installation and maintenance.

Suitable for a Wide Range of Speeds: While not optimized for very high speeds, they perform well at moderate speeds.

Preload Adjustment: Preload can be adjusted during installation to further optimize rigidity and reduce play.

Design and Construction

Outer and Inner Rings: These are typically made of high-quality bearing steel. The rings are often hardened for increased durability.

Rollers: Cylindrical rollers are arranged in a crossed configuration within the bearing. They are usually made of hardened steel.

Spacers (Separators): Spacers (typically made of resin or metal) are placed between the rollers to prevent them from contacting each other and to maintain proper spacing. Some designs may use a cage.

Mounting Holes: RE series bearings often have pre-drilled mounting holes in the outer and/or inner rings to facilitate easy and secure installation.

Applications

Machine Tools: Rotary tables, indexing heads, and turrets.

Robotics: Robot joints, especially those requiring high precision and stiffness.

Medical Equipment: CT scanners, MRI machines, and other precision imaging systems.

Semiconductor Manufacturing Equipment: Wafer handling and inspection systems.

Inspection Equipment: Precision measuring instruments.

Aerospace: Actuators and other critical components.

Key Considerations When Selecting a THK RE Series Bearing

Load Requirements: Calculate the axial, radial, and moment loads that the bearing will experience.

Speed: Determine the maximum rotational speed the bearing will operate at.

Accuracy: Consider the required positioning accuracy and repeatability.

Rigidity: Determine the necessary rigidity to minimize deflection under load.

Operating Environment: Consider factors such as temperature, humidity, and the presence of contaminants.

Space Constraints: Evaluate the available space for the bearing.

Mounting Method: Choose a bearing with a compatible mounting configuration.

Preload: Determine the appropriate preload to optimize performance.

Lubrication: Select a suitable lubricant based on the operating conditions.

THK RE Series Sub-Categories/Types

THK offers various types within the RE Series, often differentiated by:

Cage/Spacer Design: Resin cage, metal cage, or without a cage (using spacers). The cage type affects friction, speed capability, and lubrication requirements.

Outer/Inner Ring Configuration: Different configurations may be available to suit specific mounting requirements. Check the THK catalog for variations.