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Roller Type RGH-CA/HA Series Linear Guideway

Home · Products · Linear Guideway · Roller Type RGH-CA/HA Series Linear Guideway

Roller Type RGH-CA/HA Series Linear Guideway

The RGH-CA/HA series is a high-assembly type roller linear guideway. Its core innovation is replacing traditional ball bearings with cylindrical rollers that provide line contact. This change results in a significantly larger contact area, enabling it to offer several times the rated load capacity and rigidity of ball-type guideways of the same size, while also possessing excellent shock and vibration resistance. It is a "structural-level" component for heavy-duty CNC machine tools, large forging equipment, high-precision measuring machines, and other applications facing extreme mechanical challenges.

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Technology

The RGH series is the ultimate embodiment of performance-oriented design, offering a generational.

Performance Characteristics	RGH-CA/HA Series Roller Guide Rails	HGH-CA/HA Series Ball-Type Guide Rails	Core Values
Core Positioning	Ultimate rigidity, ultimate load capacity, ultimate stability – designed for the most demanding operating conditions.	High performance, high precision and high versatility, meeting the vast majority of industrial requirements.	Overcomes the performance limitations of ball-type guideways when they reach their limits in terms of load capacity and rigidity.
Rolling Elements and Contact	Cylindrical rollers, line contact. Large contact area, uniform stress distribution, and high resistance to flattening.	Steel balls, point contact. Concentration of contact stress.	Delivers a significant leap in load capacity and rigidity, with improved service life calculations.
Rated Load	Extremely high. For the same specifications, the rated dynamic and static load capacities are typically 2–4 times higher than those of ball-type guides, or even higher.	High.	Enables equipment to withstand enormous loads or significantly extends service life under heavy loads.
Rigidity	Extremely high. The roller system exhibits minimal elastic deformation, providing near-‘absolute’ rigidity with virtually no displacement compromise under heavy loads.	High.	Ensures the absolute stability of the motion platform during heavy-duty cutting and high acceleration/deceleration, thereby enhancing machining accuracy and surface finish.
Shock and Vibration Resistance	Excellent. The line-contact structure offers exceptional shock load dispersion, effectively absorbing and cushioning vibrations.	Good.	Suitable for processes involving severe impact, such as forging and stamping, protecting other components of the system.
Smooth Operation	Extremely smooth and quiet. The rollers provide superior damping, eliminating the ‘chatter’ associated with ball bearings, making them particularly suitable for low-speed precision motion.	Smooth and seamless.	Provides the mechanical foundation for achieving mirror-finish machining and nanometre-level positioning.

Main Technical Parameters and Design
1. Roller Circulation System: Utilizes a precision roller retainer to ensure smooth, synchronous circulation of each roller, preventing collisions and friction, maintaining low noise and low temperature rise even at high speeds.
2. Accuracy Class: Offers top-tier accuracy options from precision grade (P) to ultra-precision grade (UP), ensuring that heavy loads and high precision are not mutually exclusive.
3. Preload and Rigidity Configuration: Typically comes standard with heavy preload (C3) to enhance system rigidity; some models offer an ultra-heavy preload (C5) option.
4. Sealing Technology: Equipped with multiple seals and heavy-duty scrapers to prevent large particle chips and dust generated in heavy-load environments from entering the raceway.

Applications
The Roller Type RGH-CA/HA Series Linear Guideway is the ideal choice for the following top-tier heavy-duty, high-precision equipment:
Ultra-heavy-duty CNC machine tools: Core linear axes of large gantry five-axis machining centers, heavy-duty floor-type boring and milling machines, and guideway grinding machines.
High-precision heavy equipment: Large coordinate measuring machines, ultra-precision optical processing machine tools, and heavy-duty presses for semiconductor packaging.
Energy and heavy industry: Wind power gearbox processing equipment, large diesel engine cylinder block processing lines, and precision guidance for heavy presses.
High-end scientific research equipment: Load-bearing and motion mechanisms for synchrotron radiation sources and spacecraft component testing platforms.

The Roller Type RGH-CA/HA Series Linear Guideway is a masterpiece that pushes the physical limits of linear motion technology. It abandons the pursuit of universal applicability through extreme speed and low friction, instead pushing load capacity, rigidity, and stability to the extreme. It is not merely a component, but a decisive force in ensuring high-performance, high-precision machining of heavy equipment.

_Parameters

Model No.	Dimensions of Assembly (mm)			Dimensions of Block (mm)													Dimensions of Rail (mm)							Mounting Bolt for Rail	Basic Dynamic Load Rating	Basic Static Load Rating	Static Rated Moment(kgf.m）			重量 Weight
	H	H1	N	W	B	B1	C	L1	L	K1	K2	G	Mxl	T	H2	H3	WR	HR	D	h	d	P	E	（mm）	C(KN)	C0(KN)	MR KN-m	MP KN-m	MY KN-m	block kg	Rail kg/m
RGH15CA	28	4	9.5	34	26	4	26	45	68	13.4	4.7	5.3	M4x8	6	7.6	10.1	15	16.5	7.5	5.7	4.5	30	20	M4x16	11.3	24	0.311	0.173	0.173	0.20	1.8
RGH20CA	34	5	12	44	32	6	36	57.5	86	15.8	6	5.3	M5x8	8	8.3	8.3	20	21	9.5	8.5	6	30	20	M5x20	21.3	46.7	0.647	0.46	0.46	0.40	2.76
RGH20HA							50	77.5	106	18.8															26.9	63	0.872	0.837	0.837	0.53
RGH25CA	40	5.5	12.5	48	35	6.5	35	64.5	97.9	20.75	7.25	12	M6x8	9.5	10.2	10	23	23.6	11	9	7	30	20	M6x20	27.7	57.1	0.758	0.605	0.605	0.61	3.08
RGH25HA							50	81	114.4	21.5															33.9	73.4	0.975	0.991	0.991	0.75
RGH30CA	45	6	16	60	40	10	40	71	109.8	23.5	8	12	M8x10	9.5	9.5	10.3	28	28	14	12	9	40	20	M8x25	39.1	82.1	1.445	1.06	1.06	0.90	4.41
RGH30HA							60	93	131.8	24.5															48.1	105	1.846	1.712	1.712	1.16
RGH35CA	55	6.5	18	70	50	10	50	79	124	22.5	10	12	M8x12	12	16	19.6	34	30.2	14	12	9	40	20	M8x25	57.9	105.2	2.17	1.44	1.44	1.57	6.06
RGH35HA							72	106.5	151.5	25.25															73.1	142	2.93	2.6	2.6	2.06
RGH45CA	70	8	20.5	86	60	13	60	106	153.2	31	10	12.9	M10x17	16	20	24	45	38	20	17	14	52.5	22.5	M12x35	92.6	178.8	4.52	3.05	3.05	3.18	9.97
RGH45HA							80	139.8	187	37.9															116	230.9	6.33	5.47	5.47	4.13
RGH55CA	80	10	23.5	100	75	12.5	75	125.5	183.7	37.75	12.5	12.9	M12x18	17.5	22	27.5	53	44	23	20	16	60	30	M14x45	130.5	252	8.01	5.4	5.4	4.89	13.98
RGH55HA							95	173.8	232	51.9															167.8	348	11.15	10.25	10.25	6.68
RGH65CA	90	12	31.5	126	76	25	70	160	232	60.8	15.8	12.9	M16x20	25	15	15	63	53	26	22	18	75	35	M16x50	213	411.6	16.20	11.59	11.59	8.89	20.22
RGH65HA							120	223	295	67.3															275.3	572.7	22.55	22.17	22.17	12.13