VB · Ball linear guide, O-arrangement

Construction & principle

VB ball guides carry the same high load rating in all four main load directions and run with very low noise. Four ball rows in a preloaded O-arrangement give a larger effective support width than an X-arrangement, and with it a higher rigidity against moment loads.

Interchangeability is unlimited: ball carriages and rails of different styles within one accuracy class can be combined freely, so carriages and rails can be stocked and ordered separately.

With eight sizes from 15 to 65 and six carriage types — flanged or narrow, standard or long, standard or high — VB covers automation, handling and machine building from light to heavy axes.

VB raceway arrangement — O-arrangement (back-to-back)

O-arrangement (back-to-back) — balls on four raceways; the red lines show the contact directions.

bolt

Very dynamic

Up to 5 m/s and 500 m/s².

swap_horiz

Fully interchangeable

Carriages and rails of one accuracy class combine freely.

join

Rigid O-arrangement

Higher moment rigidity than an X-arrangement.

straighten

Eight sizes

Sizes 15–65, C up to 156.1 kN (VB53, size 65).

Typical applications

Handling and pick-and-placePackaging and printing machinesMachine tools and woodworkingSemiconductor and electronics assemblyMeasuring and inspection systemsLinear axes and gantries

Carriage types

Flanged carriages bolt from above or below and spread the load over a wider base; narrow carriages need less width and bolt from above. Long carriages raise load ratings and moment capacity, high carriages raise the mounting height.

VB51Flanged carriage, standard lengthSizes 15–65 · C up to 120.4 kNThreaded holes — bolt from above or belowDimensions arrow_downward

VB53Flanged carriage, longSizes 15–65 · C up to 156.1 kNThreaded holes — bolt from above or belowDimensions arrow_downward

VB22Narrow carriage, standard lengthSizes 15–65 · C up to 120.4 kNThreaded holes — bolt from aboveDimensions arrow_downward

VB23Narrow carriage, longSizes 15–65 · C up to 156.1 kNThreaded holes — bolt from aboveDimensions arrow_downward

VB21Narrow carriage, standard length, highSizes 15–55 · C up to 76.3 kNThreaded holes — bolt from aboveDimensions arrow_downward

VB24Narrow carriage, long, highSizes 25–55 · C up to 97.3 kNThreaded holes — bolt from aboveDimensions arrow_downward

Dimensions & load ratings

Dimension drawing and every size for each carriage type, as in the catalogue. Load ratings per carriage; dimensions in millimetres.

VB in the linear-guide catalogue — pages 23–36

Dimension drawings, ordering code, technical principles and selection forms in print layout. PDF · 89 pages · 11.6 MB · English.

open_in_newOpen chapter downloadDownload PDF

VB51 VB53 VB22 VB23 VB21 VB24

VB51 · Flanged carriage, standard length

FlangedStandard lengthStandard heightBolt from above or below

VB51 dimension drawing — front, side and top view

Sizes15–65

Dynamic load rating C8.4 kN – 120.4 kN

Static load rating C₀16.3 kN – 196.0 kN

Carriage mass0.20 – 10.25 kg

MountingThreaded holes — bolt from above or below

Dimensions [mm] — VB51

Size	Carriage	A	A₁	A₂	A₃	L	L₁	E₁	E₂	E₃	H	H₁	H₂¹	H₂²	K₁	K₂	K₃	K₄
15	VB51.1	47	23.5	15	16	58.2	39.2	38	30	26	24	19.90	16.3	16.20	9.6	3.2	3.2	8.1
20	VB51.8	63	31.5	20	21.5	75	49.6	53	40	35	30	25.35	20.8	20.55	11.8	3.4	3.4	11.9
25	VB51.2	70	35	23	23.5	86.2	57.8	57	45	40	36	29.90	24.5	24.25	13.4	5.3	5.3	12.3
30	VB51.7	90	45	28	31	97.7	67.4	72	52	44	42	35.35	28.6	28.35	15.7	6.1	6.1	14
35	VB51.3	100	50	34	33	110.5	77	82	62	52	48	40.40	32.2	31.85	16	6.9	6.9	14.5
45	VB51.4	120	60	45	37.5	137.6	97	100	80	60	60	50.30	40.2	39.85	19.3	8.2	8.2	17
55	VB51.5	140	70	53	43.5	159	115.5	116	95	70	70	57	48.2	47.85	22.3	9	9	22.1
65	VB51.6	170	85	63	53.5	188	139.6	142	110	82	90	76	60.2	59.85	27.3	16	16	24.3

H₂¹ with rail cover strip · H₂² without cover strip.

Mounting dimensions [mm], load ratings and mass — VB51

Size	Carriage	N₁	N₂	N₃	ØD	S₁	ØS₂	T	T₁	V₁	CN	C₀N	M_tN·m	M_t0N·m	M_LN·m	M_L0N·m	Carriagekg	Railkg/m
15	VB51.1	5.2	4.4	10.3	7.4	M5	4.5	60	20	5	8430	16260	80	160	60	120	0.20	1.4
20	VB51.8	7.7	5.2	13.2	9.4	M6	6	60	20	6	16680	29940	210	390	140	270	0.45	2.4
25	VB51.2	9.3	7	15.2	11	M8	7	60	20	7.5	20020	36590	290	530	200	370	0.65	3.2
30	VB51.7	11	7.9	17	15	M10	9	80	20	7	27800	49780	490	870	340	610	1.10	5.0
35	VB51.3	12	10.2	20.5	15	M10	9	80	20	8	36970	65030	800	1410	520	920	1.60	6.8
45	VB51.4	15	12.4	23.5	20	M12	14	105	22.5	10	60510	103100	1650	2820	1090	1860	3	10.5
55	VB51.5	18	13.5	29	23	M14	16	120	30	12	76300	121800	2440	3890	1630	2590	5.20	16.2
65	VB51.6	23	14	38.5	26	M16	18	150	35	15	120400	196000	4770	7770	3190	5180	10.25	22.4

VB53 · Flanged carriage, long

FlangedLongStandard heightBolt from above or below

VB53 dimension drawing — front, side and top view

Sizes15–65

Dynamic load rating C10.3 kN – 156.1 kN

Static load rating C₀21.7 kN – 282.8 kN

Carriage mass0.30 – 14.15 kg

MountingThreaded holes — bolt from above or below

Dimensions [mm] — VB53

Size	Carriage	A	A₁	A₂	A₃	L	L₁	E₁	E₂	E₃	H	H₁	H₂¹	H₂²	K₁	K₂	K₃	K₄
15	VB53.1	47	23.5	15	16	72.6	53.6	38	30	26	24	19.90	16.3	16.20	16.8	3.2	3.2	15.3
20	VB53.8	63	31.5	20	21.5	91.0	65.6	53	40	35	30	25.35	20.8	20.55	19.8	3.4	3.4	19.9
25	VB53.2	70	35	23	23.5	107.9	79.5	57	45	40	36	29.90	24.5	24.25	24.3	5.3	5.3	23.2
30	VB53.7	90	45	28	31	119.7	89.4	72	52	44	42	35.35	28.6	28.35	26.7	6.1	6.1	25
35	VB53.3	100	50	34	33	139.0	105.5	82	62	52	48	40.40	32.2	31.85	30.3	6.9	6.9	28.8
45	VB53.4	120	60	45	37.5	174.1	133.5	100	80	60	60	50.30	40.2	39.85	37.6	8.2	8.2	35.3
55	VB53.5	140	70	53	43.5	199	155.5	116	95	70	70	57	48.2	47.85	42.3	9	9	42.1
65	VB53.6	170	85	63	53.5	243	194.6	142	110	82	90	76	60.2	59.85	54.8	16	16	51.8

H₂¹ with rail cover strip · H₂² without cover strip.

Mounting dimensions [mm], load ratings and mass — VB53

Size	Carriage	N₁	N₂	N₃	ØD	S₁	ØS₂	T	T₁	V₁	CN	C₀N	M_tN·m	M_t0N·m	M_LN·m	M_L0N·m	Carriagekg	Railkg/m
15	VB53.1	5.2	4.4	10.3	7.4	M5	4.5	60	20	5	10320	21680	100	210	70	150	0.30	1.4
20	VB53.8	7.7	5.2	13.2	9.4	M6	6	60	20	6	19780	38100	260	490	170	340	0.55	2.4
25	VB53.2	9.3	7	15.2	11	M8	7	60	20	7.5	24510	48780	350	700	250	500	0.90	3.2
30	VB53.7	11	7.9	17	15	M10	9	80	20	7	34000	66380	600	1160	420	810	1.50	5.0
35	VB53.3	12	10.2	20.5	15	M10	9	80	20	8	45260	86700	980	1880	640	1220	2.25	6.8
45	VB53.4	15	12.4	23.5	20	M12	14	105	22.5	10	74090	137620	2020	3760	1340	2480	4.30	10.5
55	VB53.5	18	13.5	29	23	M14	16	120	30	12	97300	171500	3090	5450	2060	3620	7.50	16.2
65	VB53.6	23	14	38.5	26	M16	18	150	35	15	156100	282800	6170	11200	4130	7470	14.15	22.4

VB22 · Narrow carriage, standard length

NarrowStandard lengthStandard heightBolt from above

VB22 dimension drawing — front, side and top view

Sizes15–65

Dynamic load rating C8.4 kN – 120.4 kN

Static load rating C₀16.3 kN – 196.0 kN

Carriage mass0.15 – 6.90 kg

MountingThreaded holes — bolt from above

Dimensions [mm] — VB22

Size	Carriage	A	A₁	A₂	A₃	L	L₁	E₁	E₂	H	H₁	H₂¹	H₂²	K₁	K₂	K₃	K₄
15	VB22.1	34	17	15	9.5	58.2	39.2	26	26	24	19.90	16.3	16.20	11.6	3.2	3.2	10.1
20	VB22.8	44	22	20	12	75	49.6	32	36	30	25.35	20.8	20.55	13.8	3.4	3.4	13.9
25	VB22.2	48	24	23	12.5	86.2	57.8	35	35	36	29.90	24.5	24.25	18.4	5.3	5.3	17.3
30	VB22.7	60	30	28	16	97.7	67.4	40	40	42	35.35	28.6	28.35	21.7	6.1	6.1	20
35	VB22.3	70	35	34	18	110.5	77	50	50	48	40.40	32.2	31.85	22	6.9	6.9	20.5
45	VB22.4	86	43	45	20.5	137.6	97	60	60	60	50.30	40.2	39.85	29.3	8.2	8.2	27
55	VB22.5	100	50	53	23.5	159	115.5	75	75	70	57	48.2	47.85	32.3	9	9	32.1
65	VB22.6	126	63	63	31.5	188	139.6	76	70	90	76	60.2	59.85	47.3	16	16	44.3

H₂¹ with rail cover strip · H₂² without cover strip.

Mounting dimensions [mm], load ratings and mass — VB22

Size	Carriage	N₁	N₃	ØD	S₁	ØS₂	T	T₁	V₁	CN	C₀N	M_tN·m	M_t0N·m	M_LN·m	M_L0N·m	Carriagekg	Railkg/m
15	VB22.1	5.5	10.3	7.4	M4	4.5	60	20	5	8430	16260	80	160	60	120	0.15	1.4
20	VB22.8	7	13.2	9.4	M5	6	60	20	6	16680	29940	210	390	140	270	0.35	2.4
25	VB22.2	9	15.2	11	M6	7	60	20	7.5	20020	36590	290	530	200	370	0.50	3.2
30	VB22.7	11	17	15	M8	9	80	20	7	27800	49780	490	870	340	610	0.85	5.0
35	VB22.3	12	20.5	15	M8	9	80	20	8	36970	65030	800	1410	520	920	1.25	6.8
45	VB22.4	18	23.5	20	M10	14	105	22.5	10	60510	103100	1650	2820	1090	1860	2.40	10.5
55	VB22.5	19	29	23	M12	16	120	30	12	76300	121800	2440	3890	1630	2590	3.80	16.2
65	VB22.6	21	38.5	26	M16	18	150	35	15	120400	196000	4770	7770	3190	5180	6.90	22.4

VB23 · Narrow carriage, long

NarrowLongStandard heightBolt from above

VB23 dimension drawing — front, side and top view

Sizes15–65

Dynamic load rating C10.3 kN – 156.1 kN

Static load rating C₀21.7 kN – 282.8 kN

Carriage mass0.20 – 9.80 kg

MountingThreaded holes — bolt from above

Dimensions [mm] — VB23

Size	Carriage	A	A₁	A₂	A₃	L	L₁	E₁	E₂	H	H₁	H₂¹	H₂²	K₁	K₂	K₃	K₄
15	VB23.1	34	17	15	9.5	72.6	53.6	26	26	24	19.90	16.3	16.20	18.8	3.2	3.2	17.3
20	VB23.8	44	22	20	12	91	65.6	32	50	30	25.35	20.8	20.55	14.8	3.4	3.4	14.9
25	VB23.2	48	24	23	12.5	107.9	79.5	35	50	36	29.90	24.5	24.25	21.8	5.3	5.3	20.7
30	VB23.7	60	30	28	16	119.7	89.4	40	60	42	35.35	28.6	28.35	22.7	6.1	6.1	21
35	VB23.3	70	35	34	18	139	105.5	50	72	48	40.40	32.2	31.85	25.3	6.9	6.9	23.8
45	VB23.4	86	43	45	20.5	174.1	133.5	60	80	60	50.30	40.2	39.85	37.6	8.2	8.2	35.3
55	VB23.5	100	50	53	23.5	199	155.5	75	95	70	57	48.2	47.85	42.3	9	9	42.1
65	VB23.6	126	63	63	31.5	243	194.6	76	120	90	76	60.2	59.85	49.8	16	16	46.8

H₂¹ with rail cover strip · H₂² without cover strip.

Mounting dimensions [mm], load ratings and mass — VB23

Size	Carriage	N₁	N₃	ØD	S₁	ØS₂	T	T₁	V₁	CN	C₀N	M_tN·m	M_t0N·m	M_LN·m	M_L0N·m	Carriagekg	Railkg/m
15	VB23.1	5.5	10.3	7.4	M4	4.5	60	20	5	10320	21680	100	210	70	150	0.20	1.4
20	VB23.8	7	13.2	9.4	M5	6	60	20	6	19780	38100	260	490	170	340	0.45	2.4
25	VB23.2	9	15.2	11	M6	7	60	20	7.5	24510	48780	350	700	250	500	0.65	3.2
30	VB23.7	11	17	15	M8	9	80	20	7	34000	66380	600	1160	420	810	1.10	5.0
35	VB23.3	12	20.5	15	M8	9	80	20	8	45260	86700	980	1880	640	1220	1.70	6.8
45	VB23.4	18	23.5	20	M10	14	105	22.5	10	74090	137620	2020	3760	1340	2480	3.20	10.5
55	VB23.5	19	29	23	M12	16	120	30	12	97300	171500	3090	5450	2060	3620	4.80	16.2
65	VB23.6	21	38.5	26	M16	18	150	35	15	156100	282800	6170	11200	4130	7470	9.80	22.4

VB21 · Narrow carriage, standard length, high

NarrowStandard lengthHighBolt from above

VB21 dimension drawing — front, side and top view

Sizes15–55

Dynamic load rating C8.4 kN – 76.3 kN

Static load rating C₀16.3 kN – 121.8 kN

Carriage mass0.20 – 4.70 kg

MountingThreaded holes — bolt from above

Dimensions [mm] — VB21

Size	Carriage	A	A₁	A₂	A₃	L	L₁	E₁	E₂	H	H₁	H₂¹	H₂²	K₁	K₂	K₃	K₄
15	VB21.1	34	17	15	9.5	58.2	39.2	26	26	28	23.90	16.3	16.20	11.6	7.2	7.2	10.1
25	VB21.2	48	24	23	12.5	86.2	57.8	35	35	40	33.90	24.5	24.25	18.4	9.3	9.3	17.3
30	VB21.7	60	30	28	16	97.7	67.4	40	40	45	38.35	28.6	28.35	21.7	9.1	9.1	20
35	VB21.3	70	35	34	18	110.5	77	50	50	55	47.40	32.2	31.85	22	13.9	13.9	20.5
45	VB21.4	86	43	45	20.5	137.6	97	60	60	70	60.30	40.2	39.85	29.3	18.2	18.2	27
55	VB21.5	100	50	53	23.5	159	115.5	75	75	80	67	48.2	47.85	32.3	19	19	32.1

H₂¹ with rail cover strip · H₂² without cover strip.

Mounting dimensions [mm], load ratings and mass — VB21

Size	Carriage	N₁	N₃	ØD	S₁	ØS₂	T	T₁	V₁	CN	C₀N	M_tN·m	M_t0N·m	M_LN·m	M_L0N·m	Carriagekg	Railkg/m
15	VB21.1	5.5	10.3	7.4	M4	4.5	60	20	5	8430	16260	80	160	60	120	0.20	1.4
25	VB21.2	9	15.2	11	M6	7	60	20	7.5	20020	36590	230	530	200	370	0.65	3.2
30	VB21.7	11	17	15	M8	9	80	20	7	27800	49780	490	870	340	610	0.95	5.0
35	VB21.3	12	20.5	15	M8	9	80	20	8	36970	65030	800	1410	520	920	1.55	6.8
45	VB21.4	18	23.5	20	M10	14	105	22.5	10	60510	103100	1650	2820	1090	1860	3	10.5
55	VB21.5	19	29	23	M12	16	120	30	12	76300	121800	2440	3890	1630	2590	4.70	16.2

VB24 · Narrow carriage, long, high

NarrowLongHighBolt from above

VB24 dimension drawing — front, side and top view

Sizes25–55

Dynamic load rating C24.5 kN – 97.3 kN

Static load rating C₀48.8 kN – 171.5 kN

Carriage mass0.8 – 6 kg

MountingThreaded holes — bolt from above

Dimensions [mm] — VB24

Size	Carriage	A	A₁	A₂	A₃	L	L₁	E₁	E₂	H	H₁	H₂¹	H₂²	K₁	K₂	K₃	K₄
25	VB24.2	48	24	23	12.5	107.9	79.5	35	50	40	33.90	24.5	24.25	21.8	9.3	9.3	20.7
30	VB24.7	60	30	28	16	119.7	89.4	40	60	45	38.35	28.6	28.35	22.7	9.1	9.1	21
35	VB24.3	70	35	34	18	139	105.5	50	72	55	47.40	32.2	31.85	25.3	13.9	13.9	23.8
45	VB24.4	86	43	45	20.5	174.1	133.5	60	80	70	60.30	40.2	39.85	37.6	18.2	18.2	35.3
55	VB24.5	100	50	53	23.5	199	155.5	75	95	80	67	48.2	47.85	42.3	19	19	42.1

H₂¹ with rail cover strip · H₂² without cover strip.

Mounting dimensions [mm], load ratings and mass — VB24

Size	Carriage	N₁	N₃	ØD	S₁	ØS₂	T	T₁	V₁	CN	C₀N	M_tN·m	M_t0N·m	M_LN·m	M_L0N·m	Carriagekg	Railkg/m
25	VB24.2	9	15.2	11	M6	7	60	20	7.5	24510	48780	350	700	250	500	0.8	3.2
30	VB24.7	11	17	15	M8	9	80	20	7	34000	66380	600	1160	420	810	1.2	5.0
35	VB24.3	12	20.5	15	M8	9	80	20	8	45260	86700	980	1880	640	1220	2.1	6.8
45	VB24.4	18	23.5	20	M10	14	105	22.5	10	74090	137620	2020	3760	1340	2480	4.1	10.5
55	VB24.5	19	29	23	M12	16	120	30	12	97300	171500	3090	5450	2060	3620	6	16.2

What the dimension letters mean

Acarriage width

A₁carriage reference edge to rail centre line

A₂rail width

A₃carriage edge to rail side

Lcarriage length over end seals

L₁length of the steel body

E₁ · E₂mounting-hole spacing across · along the carriage

E₃spacing of the two centre holes (flanged VR / VB carriages)

Hmounting height, rail base to carriage top

H₁height of the carriage body

H₂rail height — ¹ with cover strip, ² without

V₁ground reference edge on the carriage, from the top face

S₁ · N₁carriage mounting thread · thread depth (VX50 / VX54: through-hole Ø)

N₂thread depth of the centre holes

ØD · ØS₂ · N₃rail counterbore Ø · bolt-hole Ø · seat height above the rail base

T · T₁rail hole pitch · rail end to first hole

K₁–K₄lubrication-port and hole positions — see drawing

C · C₀dynamic · static load rating (equal in the four main load directions)

M_t · M_t0dynamic · static torsional moment rating

M_L · M_L0dynamic · static longitudinal moment rating

Rails

The same rail profile serves every carriage type of the series — mounted from above with counterbored holes, or from below with threaded holes.

Standard rail — bolted from above

Counterbored holes for socket-head screws; the holes are closed with plastic or brass plugs, or the whole rail top is covered by a stainless-steel strip. Values are the same for every carriage type of the series.

Size	A₂	H₂¹	H₂²	ØD	ØS₂	N₃	T	T₁	Railkg/m
15	15	16.3	16.20	7.4	4.5	10.3	60	20	1.4
20	20	20.8	20.55	9.4	6	13.2	60	20	2.4
25	23	24.5	24.25	11	7	15.2	60	20	3.2
30	28	28.6	28.35	15	9	17	80	20	5.0
35	34	32.2	31.85	15	9	20.5	80	20	6.8
45	45	40.2	39.85	20	14	23.5	105	22.5	10.5
55	53	48.2	47.85	23	16	29	120	30	16.2
65	63	60.2	59.85	26	18	38.5	150	35	22.4

Bottom-lock rail — bolted from below

Threaded holes, screwed from below through the machine bed — a closed, smooth rail top with no plugs or cover needed (rail-hole code 4).

VB bottom-lock rail — section and side view

Size	A₂	H₂	L_{R max}mm	N₃	ØS₂	T	T_{1 min}	T₁	T_{1 max}	mkg/m
15	15	16.20	6000	7.5	M5	60	10	28.0	50	1.4
20	20	20.55	6000	9.0	M6	60	10	28.0	50	2.4
25	23	24.25	6000	12.0	M6	60	10	28.0	50	3.2
30	28	28.35	6000	15.0	M8	80	12	38.0	68	5
35	34	31.85	6000	15.0	M8	80	12	38.0	68	6.8
45	45	39.85	6000	19.0	M12	105	16	50.5	89	10.5
55	53	47.85	6000	22	M14	120	18	58	102	16.2
65	63	59.85	6000	25	M16	150	20	73	130	22.4

L_{R max} as listed in the catalogue rail table (6000 mm). T₁ recommended, tolerance ± 0.5 mm.

Rail length. Single rails are currently supplied up to 4,000 mm (6,000 mm and longer are being introduced). Longer axes are joined from matched segments with numbered joint marks; the holes next to a joint keep the standard pitch. Stagger the joints of paired rails and keep them at least two hole pitches away from joints in the machine bed.

Ordering code

Complete guide — rails with carriages

VB051.223.2.1000Ⅱ20/20.310.101.KK.E

VB51 · size 25 · C2 · accuracy H · 2 carriages per rail · L = 1000 mm · 2 rails · end holes 20/20 mm. The orange part is required; the grey options (rail holes and segments, carriage protection, pre-lubrication and fitting, seal kit, special requirements) are agreed with our sales team.

Carriage only

VB51.822

Type · size code · preload · accuracy

Rail only

VB082.1000

Protection · size code · accuracy · length

Accuracy and preload — available combinations

Accuracy class	C0	C1	C2	C3
N — normal (code 4)	check_circle	check_circle	—	—
H — high (code 3)	check_circle	check_circle	check_circle	—
P — precision (code 2)	—	check_circle	check_circle	—
SP — super precision (code 1)	—	check_circle	check_circle	check_circle
UP — ultra precision (code 0)	—	check_circle	check_circle	check_circle

Size codes: 1 = 15 · 8 = 20 · 2 = 25 · 7 = 30 · 3 = 35 · 4 = 45 · 5 = 55 · 6 = 65.

Field	Meaning
VB	Series — ball guide · O-arrangement
0	Rail corrosion protection: 0 oiled · 1 hard chrome · 2 black chrome · 3 nickel · 4 black oxide · 5 stainless steel
51	Carriage type (51, 53, 22, 23, 21, 24)
3	Size code: 1 = 15 · 8 = 20 · 2 = 25 · 7 = 30 · 3 = 35 · 4 = 45 · 5 = 55 · 6 = 65
1	Preload code: 0 = C0 · 1 = C1 · 2 = C2 · 3 = C3
3	Accuracy code: 0 = UP · 1 = SP · 2 = P · 3 = H · 4 = N
2	Carriages per rail
1240	Rail length in mm
Ⅱ	Rails used together (Ⅰ, Ⅱ, Ⅲ …)
20/20	End-hole distances, left / right, seen with the rail reference side towards you
3 1 0	Rail holes & cover · number of rail segments · carriage corrosion protection
1 01	Factory pre-lubrication · lube fitting
KK	Seal kit (blank = standard)
E	Special requirements — specified in writing

Build the order code and request a price

The inquiry builder offers only the accuracy / preload combinations that exist, works out symmetric end-hole distances for your rail length and sends the code with your options.

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Technical data

Rolling elementsBalls

Raceway arrangementO-arrangement (back-to-back), four rows

Load ratingsEqual in the four main load directions

Max speed / acceleration5 m/s · 500 m/s²

Sizes15–65

Carriage typesVB51, VB53, VB22, VB23, VB21, VB24

Accuracy classesN · H · P · SP · UP

Preload classesC0 · C1 · C2 · C3

StandardsLoad ratings and dimensions to ISO 14728; accuracy comparable to DIN 636

Corrosion protectionOiled (standard) · hard chrome · black chrome · nickel · black oxide · stainless steel

Rail holesCounterbored with plastic or brass plugs · stainless cover strip · bottom-lock (threaded from below)

Seal kitsStandard, ZZ, KK, DD and high-protection SH, ZH, KH, DH with inner seal strips

LubricationGrease nipples M4×0.7, M6×1 and PT1/8 (straight or 45°); oil fittings M6×1 or PT1/8 to M8×1 (straight or 90°) and push-in fittings for Ø4 mm tube. Supplied pre-lubricated — rail oil, lithium grease or a light anti-corrosion oil.

Single rail lengthUp to 4,000 mm; longer rails joined from matched segments

Accuracy classes

Accuracy class	Height H	Width W	ΔH · ΔW on one rail
N — normal	± 100 µm	± 40 µm	30 µm
H — high	± 40 µm	± 20 µm	15 µm
P — precision	± 20 µm	± 10 µm	7 µm
SP — super precision	± 10 µm	± 7 µm	5 µm
UP — ultra precision	± 5 µm	± 5 µm	3 µm

Height H: carriage top to rail base; width W: carriage reference edge to rail reference side; measured at the carriage centre.

Preload classes

Preload class	Recommended for
C0 — very light, 0–2 % C	Smoothest running and lowest friction; ball guides only, accuracy N and H.
C1 — light, 3 % C	Small external loads where overall rigidity still matters.
C2 — medium, 8 % C	Large loads, single-rail systems, high accelerations; takes above-average moments with little elastic deformation.
C3 — heavy, 12 % C	High-rigidity axes such as precision machine tools; minimum elastic deformation under high loads and moments. Accuracy P, SP, UP.

Preload raises rigidity and is included in the service-life calculation; it should not exceed one third of the bearing load. With vibration, choose C2 or C3.

Explore the linear guides

VRRoller linear guidearrow_forward VXBall linear guide, X-arrangementarrow_forward VR · VB · VXCompare all linear guidesarrow_forward

Specify your VB guide — type, size, accuracy and length.

Send us the axis — load, stroke, speed, mounting and required accuracy. We return the order code, a service-life estimate and the dimension drawing.

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VB · Ball linear guide, O-arrangement

Construction & principle

Very dynamic

Fully interchangeable

Rigid O-arrangement

Eight sizes

Typical applications

Carriage types

Dimensions & load ratings

VB51 · Flanged carriage, standard length

VB53 · Flanged carriage, long

VB22 · Narrow carriage, standard length

VB23 · Narrow carriage, long

VB21 · Narrow carriage, standard length, high

VB24 · Narrow carriage, long, high

Rails

Standard rail — bolted from above

Bottom-lock rail — bolted from below

Ordering code

Accuracy and preload — available combinations

Build the order code and request a price

Technical data

Accuracy classes

Preload classes

Explore the linear guides

Specify your VB guide — type, size, accuracy and length.

Request a price — VB linear guide

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