Name: China Ball Linear Slide RO Series Products Manufacturers Suppliers Factory - Customized Service - Devotec Automation
Brand: Devotec
SKU: 274412385

Product Features

RO series linear slide rails, which are four-row single arc-arc contact linear slides, and integrate the optimized structure design of the heavy-duty precision linear slide rails. Compared with other linear slide rails, the load and rigidity are improved. The load characteristics such as direction and the function of self-aligning can absorb the assembly error of the mounting surface and obtain high precision requirements. The concept of high speed, high load, high rigidity and high precision has become the trend of industrial products development in the world in the future.

Automatic self-aligning ability

The DF (45°-45°) combination from the circular groove can be absorbed by the inside of the line slider even if the mounting surface is slightly deviated during the installation by the elastic deformation of the steel ball and the transfer of the contact point. The effect of automatic self-aligning ability is produced to obtain a smooth motion with high precision and stability.

Interchangeable

Due to the strict control of production precision, the linear slide size can be maintained within a certain level, and the slider has a retainer design to prevent the steel ball from falling off. Therefore, some series of precisions are interchangeable, and customers can order slips as needed. Rails or sliders can also be used to store slide rails and sliders separately to reduce storage space.

High rigidity in all directions

The four-row circular groove is matched with the contact angle of 45 degrees such as four rows of steel balls to make the steel ball reach the ideal two-point contact structure, and can withstand the load from the up and down and left and right directions; if necessary, it can apply preload to improve rigidity.

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Rolling circulation system: slider, slide rail, end cover, steel ball, steel ball retainer
Lubrication system: nozzle, tubing connector
Dust-proof system: oil scraper, negative dust seal, dust rail t-rail bolt cover, metal scraper

RO series linear slide size table

(1) ROU-B / ROU-LB

Model	Component size (mm)			Slider size (mm)													Slie size (mm)							The size of the fixing bolt for the slide rail	Basic dynamic load rating	Basic static load rating	Allowable static moment			weight
																														Slider	Slide
	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)	Co (kN)	MR kN-m	MP kN-m	MY kN-m	kg	kg/m
ROU15B	28	4.3	9.5	34	26	4	26	39.4	61.4	10	4.85	5.3	M4x5	6	7.95	7.7	15	15	7.5	5.3	4.5	60	20	M4x16	11.76	19.21	0.12	0.10	0.10	0.18	1.45
ROU 20B	30	4.6	12	44	32	6	36	50.5	77.5	12.25	6	12	M5x6	8	6	6	20	17.5	9.5	8.8	6	60	20	M5x16	18.48	28.63	0.27	0.20	0.20	0.30	2.21
ROU20LB							50	65.2	92.2	12.6															22.24	37.60	0.35	0.35	0.35	0.39
ROU25B	40	5.5	12.5	48	35	6.5	35	58	84	16.8	6	12	M6x8	8	10	9	23	22	11	9.2	7	60	20	M6x20	27.29	39.45	0.42	0.33	0.33	0.51	3.21
ROU25LB							50	78.6	104.6	19.6															33.58	53.02	0.56	0.57	0.57	0.69
ROU 30B	45	6	16	60	40	10	40	70	97.4	20.25	6	12	M8x10	8.5	9.5	13.8	28	26	14	12.6	9	80	20	M8x25	38.97	55.00	0.66	0.53	0.53	0.88	4.47
ROU30LB							60	93	120.4	21.75															47.59	73.08	0.88	0.92	0.92	1.16
ROU35B	55	7.5	18	70	50	10	50	80	112.4	20.6	7	12	M8x12	10.2	16	19.6	34	28.9	14	12.6	9	80	20	M8x25	50.76	72.33	1.16	0.81	0.81	1.45	6.30
ROU35LB							72	105.8	138.2	22.5															61.91	96.12	1.54	1.40	1.40	1.92
ROU45B	70	9.5	20.5	86	60	13	60	97	139.4	23	10	12.9	M10x17	16	18.5	30.5	45	38	20	17	14	105	22.5	M12x35	80.69	110.31	1.98	1.55	1.55	2.73	10.41
ROU45LB							80	128.8	171.2	28.9															98.47	146.88	2.63	2.68	2.68	3.61
ROU 55B	80	13	23.5	100	75	12.5	75	117.7	166.7	27.35	11	12.9	M12x18	17.5	22	29	53	44	23	20	16	120	30	M14x45	119.02	159.07	3.69	2.64	2.64	4.17	15.08
ROU55LB							95	155.8	204.8	36.4															145.23	211.30	4.88	4.57	4.57	5.49
ROU 65B	90	15	31.5	126	76	25	70	144.2	200.2	43.1	14	12.9	M16x20	25	15	15	63	53	26	22	18	150	35	M16x50	181.22	240.32	6.65	4.27	4.27	7.00	21.18
ROU 65LB							120	203.6	259.6	52.8															230.93	339.52	9.38	7.38	7.38	9.82

Note: 1 kgf = 9.81 N

(2) ROM-B / ROM-LB

Model	Component size (mm)			Slider size (mm)															Slie size (mm)							The size of the fixing bolt for the slide rail	Basic dynamic load rating	Basic static load rating	Allowable static moment			weight
																																slider	Slide
	H	H1	N	W	B	B1	C	L1	L	k1	k2	G	M	T	T1	T2	H2	H3	WR	HR	D	h	d	P	E	(mm)	C (kN)	Co (kN)	MR kN-m	MP kN-m	MY kN-m	kg	kg/m
ROM 15B	24	4.3	16	47	38	4.5	30	39.4	61.4	8	4.85	5.3	M5	6	8.9	6.95	3.95	3.7	15	15	7.5	5.3	4.5	60	20	M4x16	11.76	19.21	0.12	0.10	0.10	0.17	1.45
ROM 20B	30	4.6	21.5	63	53	5	40	50.5	77.5	10.25	6	12	M6	8	10	9.5	6	6	20	17.5	9.5	8.8	6	60	20	M5x16	18.48	28.63	0.27	0.20	0.20	0.40	2.21
ROM 20LB								65.2	92.2	17.6																	22.24	37.60	0.35	0.35	0.35	0.52
ROM 25B	36	5.5	23.5	70	57	6.5	45	58	84	10.7	6	12	M8	8	14	10	6	5	23	22	11	9.2	7	60	20	M6x20	27.29	39.45	0.42	0.33	0.33	0.59	3.21
ROM 25LB								78.6	104.6	21																	33.58	53.02	0.56	0.57	0.57	0.80
ROM 30B	42	6	31	90	72	9	52	70	97.4	14.25	6	12	M10	8.5	16	10	6.5	10.8	28	26	14	12.6	9	80	20	M8x25	38.97	55.00	0.66	0.53	0.53	1.09	4.47
ROM 30LB								93	120.4	25.75																	47.59	73.08	0.88	0.92	0.92	1.44
ROM 35B	48	7.5	33	100	82	9	62	80	112.4	14.6	7	12	M10	10.1	18	13	9	12.6	34	28.9	14	12.6	9	80	20	M8x25	50.76	72.33	1.16	0.81	0.81	1.56	6.30
ROM 35LB								105.8	138.2	27.5																	61.91	96.12	1.54	1.40	1.40	2.06
ROM 45B	60	9.5	37.5	120	100	10	80	97	139.4	13	10	12.9	M12	15.1	22	15	8.5	20.5	45	38	20	17	14	105	22.5	M12x35	80.69	110.31	1.98	1.55	1.55	2.79	10.41
ROM 45LB								128.8	171.2	28.9																	98.47	146.88	2.63	2.68	2.68	3.69
ROM 55B	70	13	43.5	140	116	12	95	117.7	166.7	17.35	11	12.9	M14	17.5	26.5	17	12	19	53	44	23	20	16	120	30	M14x45	119.02	159.07	3.69	2.64	2.64	4.52	15.08
ROM 55LB								155.8	204.8	36.4																	145.23	211.32	4.88	4.57	4.57	5.96
ROM 65B	90	15	53.5	170	142	14	110	144.2	200.2	23.1	14	12.9	M16	25	37.5	23	15	15	63	53	26	22	18	150	35	M16x50	181.22	240.32	6.65	4.27	4.27	9.17	21.18
ROM 65LB								203.6	259.6	52.8																	230.93	339.52	9.385	7.38	7.38	12.89

Note: 1 kgf = 9.81 N

(3) ROT-A Locking slide size table

Model	Slide size (mm)						Weight (kg/m)
Model	WR	HR	S	h	P	E	Weight (kg/m)
ROT15A	15	15	M5 x 0.8P	8	60	20	1.48
ROT20A	20	17.5	M6 x 1P	10	60	20	2.29
ROT25A	23	22	M6 x 1P	12	60	20	3.35
ROT30A	28	26	M8 x 1.25P	15	80	20	4.67
ROT35A	34	29	M8x1.25P	17	80	20	6.51
ROT45A	45	38	M12 x 1.75P	24	105	22.5	10.87
ROT55A	53	44	M14 x 2P	24	120	30	15.67
ROT65A	63	53	M20 x 2.5P	30	150	35	21.73

Application equipment

● Machining center

● Machine tool

● Precision processing machine

● Heavy duty cutting machine

● Marble cutting machine

● Grinder

● Injection machine

● Punch

● Automation device

● Transportation Equipment

● Measuring instrument

Question

Q1: How to determine the appropriate load capacity for ball linear guides in a mechanical system?

A: The load capacity selection involves three main considerations:
Dynamic Load Rating (C): Calculate the maximum dynamic load the guide can withstand over 10^6 cycles. Factor in the actual working load, acceleration forces, and moment loads from the mechanism. For example, a robotic arm with repetitive motion requires C ≥ 1.5× the peak dynamic load to ensure a service life of ≥ 10,000 km.
Static Load Rating (C0): Ensure the guide can support static loads without permanent deformation. The safety factor for static loads is typically ≥ 2, especially in applications with sudden shocks (e.g., heavy workpiece handling).
Load Distribution: Analyze how the load is distributed across multiple guides. For a dual-guide system, uneven mounting or misalignment can cause one guide to bear 60%+ of the load, so select guides with 20% higher rated capacity than the theoretical calculation.

Q2: What factors should be considered when choosing the precision grade of ball linear guides?

A: Precision grade selection depends on the application's accuracy requirements:
Normal Precision (N grade): Suitable for general machinery (e.g., conveyor systems, packaging equipment) with allowable linearity of 0.1–0.3 mm/m. Cost-effective but less suitable for high-precision positioning.
High Precision (H grade): Used in CNC machines or inspection equipment, requiring linearity ≤ 0.05 mm/m and repeatability ≤ ±0.01 mm. Features tighter ball fit and preload to reduce backlash.
Ultra-High Precision (P grade): For semiconductor manufacturing or optical systems, demanding linearity ≤ 0.02 mm/m. Requires ground raceways and strict quality control (e.g., surface roughness Ra ≤ 0.4 μm).
Environmental Factors: In dusty or high-temperature environments, even high-precision guides may need protective covers to maintain accuracy over time.

Company introduction

One Of The Best Rack and Pinion Manufacturers In China
Kunshan Devotec Automation Co., Ltd. was established in 2012, but its origins trace back to an initial investment by the German company WMH HERION in Qingdao, Shandong Province in 2007. Since then, we have accumulated extensive experience in engineering, manufacturing, and quality control. As a specialist in drive technology, Kunshan Devotec Automation focuses on the production of high-precision gear racks, gears, pinions, gearboxes, linear guideways, and other linear transmission components.

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