VX series · Ball guide · X-arrangement
Ball carriages in X-arrangement for sizes 20 to 35 — tolerant of mounting errors, quiet and interchangeable; also with through-holes for bolting from below (VX50, VX54).
Know the type and size? Build the order code and request a price. Still choosing? Compare roller and ball guides, accuracy classes and preload first.
Dimensions and load ratings arrow_downward
VX ball guides carry the same load rating in all four main load directions and run quietly and smoothly. The X-arrangement uses single-arc raceways on four ball rows: the guide averages out errors in the mounting surfaces instead of being forced by them. In tests, the running error of a pair of rails dropped to about one sixth of the mounting-surface error.
Interchangeability is unlimited — carriages and rails of different styles within one accuracy class combine freely. Besides the flanged and narrow carriages, VX offers flanged carriages with plain through-holes (VX50, VX54) that are bolted from below.
The side lubrication port of the carriages feeds both the upper and the lower raceway grooves, even when the guide is mounted at an angle.
X-arrangement (face-to-face) — balls on four raceways; the red lines show the contact directions.
X-arrangement averages out errors of the mounting surfaces.
Carriages and rails of one accuracy class combine freely.
Side port supplies the upper and lower raceway grooves.
Including VX50 / VX54 for bolting from below.
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.








Dimension drawing and every size for each carriage type, as in the catalogue. Load ratings per carriage; dimensions in millimetres.
VX in the linear-guide catalogue — pages 37–54
Dimension drawings, ordering code, technical principles and selection forms in print layout. PDF · 89 pages · 11.6 MB · English.

| Size | Carriage | A | A1 | A2 | A3 | L | L1 | E1 | E2 | H | H1 | H21 | H22 | K1 | K2 | K3 | K4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | VX51.8 | 63 | 31.5 | 20 | 21.5 | 77.5 | 50.5 | 53 | 40 | 30 | 25.4 | 19.2 | 18.9 | 11.3 | 5.2 | 5.8 | 9.8 |
| 25 | VX51.2 | 70 | 35 | 23 | 23.5 | 84 | 58 | 57 | 45 | 36 | 30.5 | 23.9 | 23.6 | 12.3 | 6.2 | 5 | 10.7 |
| 30 | VX51.7 | 90 | 45 | 28 | 31 | 97.4 | 70 | 72 | 52 | 42 | 36 | 27.7 | 27.4 | 15 | 6.4 | 12 | 14.5 |
| 35 | VX51.3 | 100 | 50 | 34 | 33 | 112.4 | 80 | 82 | 62 | 48 | 40.5 | 30.7 | 30.4 | 16 | 9 | 11.3 | 14.5 |
H21 with rail cover strip · H22 without cover strip.
| Size | Carriage | N1 | N3 | ØD | S1 | ØS2 | T | T1 | V1 | CN | C0N | Mt0N·m | ML0N·m | Carriagekg | Railkg/m |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | VX51.8 | 9.5 | 10.4 | 9.5 | M6 | 6 | 60 | 20 | 8 | 17830 | 34380 | 270 | 200 | 0.40 | 2.31 |
| 25 | VX51.2 | 14 | 14.6 | 11 | M8 | 7 | 60 | 20 | 8 | 26260 | 49510 | 420 | 330 | 0.59 | 3.40 |
| 30 | VX51.7 | 16 | 15.4 | 14 | M10 | 9 | 80 | 20 | 8.5 | 36530 | 67380 | 660 | 530 | 1.09 | 4.63 |
| 35 | VX51.3 | 18 | 18.4 | 14 | M10 | 9 | 80 | 20 | 10 | 48570 | 88020 | 1160 | 810 | 1.56 | 6.53 |

| Size | Carriage | A | A1 | A2 | A3 | L | L1 | E1 | E2 | H | H1 | H21 | H22 | K1 | K2 | K3 | K4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | VX53.8 | 63 | 31.5 | 20 | 21.5 | 92.2 | 65.2 | 53 | 40 | 30 | 25.4 | 19.2 | 18.9 | 18.6 | 5.2 | 5.8 | 17.1 |
| 25 | VX53.2 | 70 | 35 | 23 | 23.5 | 104.6 | 78.6 | 57 | 45 | 36 | 30.5 | 23.9 | 23.6 | 22.6 | 6.2 | 5 | 21 |
| 30 | VX53.7 | 90 | 45 | 28 | 31 | 120.4 | 93 | 72 | 52 | 42 | 36 | 27.7 | 27.4 | 26.5 | 6.4 | 12 | 26 |
| 35 | VX53.3 | 100 | 50 | 34 | 33 | 138.2 | 105.8 | 82 | 62 | 48 | 40.5 | 30.7 | 30.4 | 28.9 | 9 | 11.3 | 27.4 |
H21 with rail cover strip · H22 without cover strip.
| Size | Carriage | N1 | N3 | ØD | S1 | ØS2 | T | T1 | V1 | CN | C0N | Mt0N·m | ML0N·m | Carriagekg | Railkg/m |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | VX53.8 | 9.5 | 10.4 | 9.5 | M6 | 6 | 60 | 20 | 8 | 21780 | 45840 | 350 | 350 | 0.52 | 2.31 |
| 25 | VX53.2 | 14 | 14.6 | 11 | M8 | 7 | 60 | 20 | 8 | 32140 | 66020 | 560 | 570 | 0.80 | 3.40 |
| 30 | VX53.7 | 16 | 15.4 | 14 | M10 | 9 | 80 | 20 | 8.5 | 44670 | 89850 | 880 | 920 | 1.44 | 4.63 |
| 35 | VX53.3 | 18 | 18.4 | 14 | M10 | 9 | 80 | 20 | 10 | 59390 | 117360 | 1540 | 1400 | 2.06 | 6.53 |

| Size | Carriage | A | A1 | A2 | A3 | L | L1 | E1 | E2 | H | H1 | H21 | H22 | K1 | K2 | K3 | K4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | VX50.8 | 63 | 31.5 | 20 | 21.5 | 77.5 | 50.5 | 53 | 40 | 30 | 25.4 | 19.2 | 18.9 | 11.3 | 5.2 | 5.8 | 9.8 |
| 25 | VX50.2 | 70 | 35 | 23 | 23.5 | 84 | 58 | 57 | 45 | 36 | 30.5 | 23.9 | 23.6 | 12.3 | 6.2 | 5 | 10.7 |
| 30 | VX50.7 | 90 | 45 | 28 | 31 | 97.4 | 70 | 72 | 52 | 42 | 36 | 27.7 | 27.4 | 15 | 6.4 | 12 | 14.5 |
| 35 | VX50.3 | 100 | 50 | 34 | 33 | 112.4 | 80 | 82 | 62 | 48 | 40.5 | 30.7 | 30.4 | 16 | 9 | 11.3 | 14.5 |
H21 with rail cover strip · H22 without cover strip.
| Size | Carriage | N1 | N3 | ØD | S1 | ØS2 | T | T1 | V1 | CN | C0N | Mt0N·m | ML0N·m | Carriagekg | Railkg/m |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | VX50.8 | 9.5 | 10.4 | 9.5 | Φ6 | 6 | 60 | 20 | 8 | 17830 | 34380 | 270 | 200 | 0.40 | 2.31 |
| 25 | VX50.2 | 14 | 14.6 | 11 | Φ7 | 7 | 60 | 20 | 8 | 26260 | 49510 | 420 | 330 | 0.59 | 3.40 |
| 30 | VX50.7 | 16 | 15.4 | 14 | Φ9 | 9 | 80 | 20 | 8.5 | 36350 | 67380 | 660 | 530 | 1.09 | 4.63 |
| 35 | VX50.3 | 18 | 18.4 | 14 | Φ9 | 9 | 80 | 20 | 10 | 48570 | 88020 | 1160 | 810 | 1.56 | 6.53 |

| Size | Carriage | A | A1 | A2 | A3 | L | L1 | E1 | E2 | H | H1 | H21 | H22 | K1 | K2 | K3 | K4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | VX54.8 | 63 | 31.5 | 20 | 21.5 | 92.2 | 65.2 | 53 | 40 | 30 | 25.4 | 19.2 | 18.9 | 18.6 | 5.2 | 5.8 | 17.1 |
| 25 | VX54.2 | 70 | 35 | 23 | 23.5 | 104.6 | 78.6 | 57 | 45 | 36 | 30.5 | 23.9 | 23.6 | 22.6 | 6.2 | 5 | 21 |
| 30 | VX54.7 | 90 | 45 | 28 | 31 | 120.4 | 93 | 72 | 52 | 42 | 36 | 27.7 | 27.4 | 26.5 | 6.4 | 12 | 26 |
| 35 | VX54.3 | 100 | 50 | 34 | 33 | 138.2 | 105.8 | 82 | 62 | 48 | 40.5 | 30.7 | 30.4 | 28.9 | 9 | 11.3 | 27.4 |
H21 with rail cover strip · H22 without cover strip.
| Size | Carriage | N1 | N3 | ØD | S1 | ØS2 | T | T1 | V1 | CN | C0N | Mt0N·m | ML0N·m | Carriagekg | Railkg/m |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | VX54.8 | 9.5 | 10.4 | 9.5 | Φ6 | 6 | 60 | 20 | 8 | 21780 | 45840 | 350 | 350 | 0.52 | 2.31 |
| 25 | VX54.2 | 14 | 14.6 | 11 | Φ7 | 7 | 60 | 20 | 8 | 32140 | 66020 | 560 | 570 | 0.80 | 3.40 |
| 30 | VX54.7 | 16 | 15.4 | 14 | Φ9 | 9 | 80 | 20 | 8.5 | 44670 | 89850 | 880 | 920 | 1.44 | 4.63 |
| 35 | VX54.3 | 18 | 18.4 | 14 | Φ9 | 9 | 80 | 20 | 10 | 59390 | 117360 | 1540 | 1400 | 2.06 | 6.53 |

| Size | Carriage | A | A1 | A2 | A3 | L | L1 | E1 | E2 | H | H1 | H21 | H22 | K1 | K2 | K3 | K4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | VX22.8 | 44 | 22 | 20 | 12 | 77.5 | 50.5 | 32 | 36 | 30 | 25.4 | 19.2 | 18.9 | 13.3 | 5.2 | 5.8 | 11.8 |
| 25 | VX22.2 | 48 | 24 | 23 | 12.5 | 84 | 58 | 35 | 35 | 36 | 30.5 | 23.9 | 23.6 | 17.3 | 6.2 | 5 | 15.7 |
| 30 | VX22.7 | 60 | 30 | 28 | 16 | 97.4 | 70 | 40 | 40 | 42 | 36 | 27.7 | 27.4 | 21 | 6.4 | 12 | 20.5 |
| 35 | VX22.3 | 70 | 35 | 34 | 18 | 112.4 | 80 | 50 | 50 | 48 | 40.5 | 30.7 | 30.4 | 22 | 9 | 11.3 | 20.5 |
H21 with rail cover strip · H22 without cover strip.
| Size | Carriage | N1 | N3 | ØD | S1 | ØS2 | T | T1 | V1 | CN | C0N | Mt0N·m | ML0N·m | Carriagekg | Railkg/m |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | VX22.8 | 6 | 10.4 | 9.5 | M5 | 6 | 60 | 20 | 8 | 17830 | 34380 | 270 | 200 | 0.30 | 2.31 |
| 25 | VX22.2 | 6 | 14.6 | 11 | M6 | 7 | 60 | 20 | 8 | 26260 | 49510 | 420 | 330 | 0.42 | 3.40 |
| 30 | VX22.7 | 10 | 15.4 | 14 | M8 | 9 | 80 | 20 | 8.5 | 36530 | 67380 | 660 | 530 | 0.78 | 4.63 |
| 35 | VX22.3 | 12 | 18.4 | 14 | M8 | 9 | 80 | 20 | 10.2 | 48570 | 88020 | 1160 | 810 | 1.14 | 6.53 |

| Size | Carriage | A | A1 | A2 | A3 | L | L1 | E1 | E2 | H | H1 | H21 | H22 | K1 | K2 | K3 | K4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | VX23.8 | 44 | 22 | 20 | 12 | 92.2 | 65.2 | 32 | 50 | 30 | 25.4 | 19.2 | 18.9 | 13.6 | 5.2 | 5.8 | 12.1 |
| 25 | VX23.2 | 48 | 24 | 23 | 12.5 | 104.6 | 78.6 | 35 | 50 | 36 | 30.5 | 23.9 | 23.6 | 20.1 | 6.2 | 5 | 18.5 |
| 30 | VX23.7 | 60 | 30 | 28 | 16 | 120.4 | 93 | 40 | 60 | 42 | 36 | 27.7 | 27.4 | 22.5 | 6.4 | 12 | 22 |
| 35 | VX23.3 | 70 | 35 | 34 | 18 | 138.2 | 105.8 | 50 | 72 | 48 | 40.5 | 30.7 | 30.4 | 23.9 | 9 | 11.3 | 22.4 |
H21 with rail cover strip · H22 without cover strip.
| Size | Carriage | N1 | N3 | ØD | S1 | ØS2 | T | T1 | V1 | CN | C0N | Mt0N·m | ML0N·m | Carriagekg | Railkg/m |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | VX23.8 | 6 | 10.4 | 9.5 | M5 | 6 | 60 | 20 | 8 | 21780 | 45840 | 350 | 350 | 0.39 | 2.31 |
| 25 | VX23.2 | 6 | 14.6 | 11 | M6 | 7 | 60 | 20 | 8 | 32140 | 66020 | 560 | 570 | 0.57 | 3.40 |
| 30 | VX23.7 | 10 | 15.4 | 14 | M8 | 9 | 80 | 20 | 8.5 | 44670 | 89850 | 880 | 920 | 1.03 | 4.63 |
| 35 | VX23.3 | 12 | 18.4 | 14 | M8 | 9 | 80 | 20 | 10.2 | 59390 | 117360 | 1540 | 1400 | 1.52 | 6.53 |

| Size | Carriage | A | A1 | A2 | A3 | L | L1 | E1 | E2 | H | H1 | H21 | H22 | K1 | K2 | K3 | K4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 25 | VX21.2 | 48 | 24 | 23 | 12.5 | 84 | 58 | 35 | 35 | 40 | 34.5 | 23.9 | 23.6 | 17.3 | 10.2 | 9 | 15.7 |
| 30 | VX21.7 | 60 | 30 | 28 | 16 | 97.4 | 70 | 40 | 40 | 45 | 39 | 27.7 | 27.4 | 21 | 9.4 | 15 | 20.5 |
| 35 | VX21.3 | 70 | 35 | 34 | 18 | 112.4 | 80 | 50 | 50 | 55 | 47.5 | 30.7 | 30.4 | 22 | 16 | 18.3 | 20.5 |
H21 with rail cover strip · H22 without cover strip.
| Size | Carriage | N1 | N3 | ØD | S1 | ØS2 | T | T1 | V1 | CN | C0N | Mt0N·m | ML0N·m | Carriagekg | Railkg/m |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 25 | VX21.2 | 8 | 14.6 | 11 | M6 | 7 | 60 | 20 | 8 | 26260 | 49510 | 420 | 330 | 0.51 | 3.40 |
| 30 | VX21.7 | 10 | 15.4 | 14 | M8 | 9 | 80 | 20 | 8.5 | 36530 | 67380 | 660 | 530 | 0.85 | 4.63 |
| 35 | VX21.3 | 12 | 18.4 | 14 | M8 | 9 | 80 | 20 | 10.2 | 48570 | 88020 | 1160 | 810 | 1.20 | 6.53 |

| Size | Carriage | A | A1 | A2 | A3 | L | L1 | E1 | E2 | H | H1 | H21 | H22 | K1 | K2 | K3 | K4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 25 | VX24.2 | 48 | 24 | 23 | 12.5 | 104.6 | 78.6 | 35 | 50 | 40 | 34.5 | 23.9 | 23.6 | 20.1 | 10.2 | 9 | 18.5 |
| 30 | VX24.7 | 60 | 30 | 28 | 16 | 120.4 | 93 | 40 | 60 | 45 | 39 | 27.7 | 27.4 | 22.5 | 9.4 | 15 | 22 |
| 35 | VX24.3 | 70 | 35 | 34 | 18 | 138.2 | 105.8 | 50 | 72 | 55 | 47.5 | 30.7 | 30.4 | 23.9 | 16 | 18.3 | 22.4 |
H21 with rail cover strip · H22 without cover strip.
| Size | Carriage | N1 | N3 | ØD | S1 | ØS2 | T | T1 | V1 | CN | C0N | Mt0N·m | ML0N·m | Carriagekg | Railkg/m |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 25 | VX24.2 | 8 | 14.6 | 11 | M6 | 7 | 60 | 20 | 8 | 32140 | 66020 | 560 | 570 | 0.88 | 3.40 |
| 30 | VX24.7 | 10 | 15.4 | 14 | M8 | 9 | 80 | 20 | 8.5 | 44670 | 89850 | 880 | 920 | 1.47 | 4.63 |
| 35 | VX24.3 | 12 | 18.4 | 14 | M8 | 9 | 80 | 20 | 10.2 | 59390 | 117360 | 1540 | 1400 | 2.08 | 6.53 |
The same rail profile serves every carriage type of the series — mounted from above with counterbored holes, or from below with threaded holes.
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 |
|---|---|---|---|---|---|---|---|---|---|
| 20 | 20 | 19.2 | 18.9 | 9.5 | 6 | 10.4 | 60 | 20 | 2.31 |
| 25 | 23 | 23.9 | 23.6 | 11 | 7 | 14.6 | 60 | 20 | 3.40 |
| 30 | 28 | 27.7 | 27.4 | 14 | 9 | 15.4 | 80 | 20 | 4.63 |
| 35 | 34 | 30.7 | 30.4 | 14 | 9 | 18.4 | 80 | 20 | 6.53 |
Threaded holes, screwed from below through the machine bed — a closed, smooth rail top with no plugs or cover needed (rail-hole code 4).

| Size | A2 | H2 | LR maxmm | N3 | ØS2 | T | T1 min | T1 | T1 max | mkg/m |
|---|---|---|---|---|---|---|---|---|---|---|
| 20 | 20 | 18.9 | 4000 | 9.0 | M6 | 60 | 10 | 28.0 | 50 | 2.31 |
| 25 | 23 | 23.6 | 4000 | 12.0 | M6 | 60 | 10 | 28.0 | 50 | 3.40 |
| 30 | 28 | 27.4 | 4000 | 15.0 | M8 | 80 | 12 | 38.0 | 68 | 4.63 |
| 35 | 34 | 30.4 | 4000 | 15.0 | M8 | 80 | 12 | 38.0 | 68 | 6.53 |
LR max as listed in the catalogue rail table (4000 mm). T1 recommended, tolerance ± 0.5 mm.
VX51 · size 25 · C1 · 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.
Type · size code · preload · accuracy
Protection · size code · accuracy · length
| 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: 8 = 20 · 2 = 25 · 7 = 30 · 3 = 35.
| Field | Meaning |
|---|---|
| VX | Series — ball guide · X-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, 50, 54) |
| 3 | Size code: 8 = 20 · 2 = 25 · 7 = 30 · 3 = 35 |
| 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 |
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.
| 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 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.
Send us the axis — load, stroke, speed, mounting and required accuracy. We return the order code, a service-life estimate and the dimension drawing.