Crossed roller guide rail

Crossed roller slides are simple a stationary base and a moving carriage low-friction motion high load-carrying capacities

Crossed roller slides are simple, linear motion devices that consist of a stationary base and a moving carriage. They provide low-friction motion and relatively high load-carrying capacities. The rollers are crossed at a 90° angle in an alternating fashion and are enclosed in the rails, which have a machined V-shaped groove to support the rollers. Crossed roller slides resemble ball slides, but provide higher load-carrying capacities and can absorb greater load impacts. Most crossed roller slides have an aluminum carriage and base, steel rods and rollers, and stainless steel end caps. The rollers move between a set of smooth, flat, parallel rods on each side of the base. Although crossed roller slides are not self-cleaning, they are suitable for environments with low levels of dust and other airborne contaminants. Typically, crossed roller slides are more expensive than ball slides. 

Crossed roller slides differ in terms of applications and features. Products that are certified for cleanroom environments are specified according the number of particles per million and the average particle size. Products that are design for vacuum environments are vacuum-rated. Some crossed roller slides include way covers or bellows to protect the rails and guides against the ingress of dust and dirt. Others include wipers or scrapers for cleaning the surfaces of rails and guides. Stackable slides or stages provide linear motion in more than one axis. Locks can be used to slow or stop linear motion, or maintain a specific carriage position. Double-carriage crossed roller slides are also available

	A	H	W	M	D	h	G	F	T	Max Length /pc  (L:mm)
LBV1	8.5	4	3.8	M2	-	-	1.8	10	2	80
LBV2	12	6	5.5	M3	4.4	2	2.5	15	2	180
LBV3	18	8	8.3	M4	6	3.1	3.5	25	2	500
LBV4	22	11	10	M5	7.5	4.2	4.5	40	3	500
LBV6	30(31)	15	14.2	M6	9.5	5.2	6	50	4	1600
LBV9	40(44)	20(22)	19.2(20.2)	M8	10.5	6.2	8(9)	50	4	1600
LBV12	58	28	28	M10	14	8.2	12	100	5	1600
LBV15	71	36	34.4	M12	17.5	10.2	14	100	6	1600
LBV18	83	40	40.2	M14	20	12.2	18	100	6	1600

  

	Dw(mm)	a(mm)	f(mm)	B(mm)	C1(KN)	C01(KN)
LBV1	1.5	1.5	2.5	3.8	0.107	0.118
LBV2	2	2	4	5.6	0.263	0.274
LBV3	3	2.5	5	7.6	0.545	0.597
LBV4	4	5	7	10	1.05	1.16
LBV6	6	6	9	14	2.06	2.41
LBV9	9	9.5	14	21	5.904	6.74
LBV12	12	10	20	25	12.15	13.77
LBV15	15	14	22	34	19.62	22.32

C1=Rated Dynamic Loading of each Cylindrical Roller;   C01=Rated Static Loading of each Cylindrical Roller;

Precision  For matched Mounting Surface

The Structure of crossing roller guideway’s matched mounting surface is showing as the below:

The Precision of matched mounting surface influences the precision and function of movement directly, so it is better to improve the mounting surface’s precision by getting higher precision.

A side: Its precision directly influence the movement precision;

B&C sides: Parallelism directly influence preloading;

Verticality: Verticality opposite to A side influences the rigidity that installed preloading directions

Therefore, we suggest to improve the precision on mounting surface, and the precision valve must border on parallelism value.

Preloading Methods

Showing as the right drawing, the preloading is usually adjusted by preloading adjusted screws,whose size and specification are the same as the installing screws, the screw center is the half of the guideway’s height

The preloading value varied from machine tools to machine tools and equipments to equipments, Over preloading will decrease the guideway’s lifespan and damage the raceway, at the same time, the cylindrical rollers will be easily deflected and locked by themselves when in the operation, Therefore, we usually recommend to use 0 preloading or less preloading.

If Higher precision and rigidity are required. The below assembly board as left drawing or the wedge block as the right will be recommended;

Crossing roller guideway can be operated in high temperature, but not more than 100°C

The speed should better not more than 30m/min

Grease:

The function for grease is to decrease the friction and fray, when the speed is higher (V>=15m/min).grease N32 (GB443-84) will be recommend, when in 40 °C and the movement viscosity is 28.8-35.2mm2/S, It only needs to grease constantly or imperatively; when the speed is lower( V<15m/min),lithium greast (GB7324-942#) will be recommended;

Crossed roller guide rail