Main Technical Parameters and Selection Guide
1. Accuracy Grade: Typically offers multiple options from standard grade (N) to ultra-precision grade (SP), meeting different needs from general automation to ultra-precision machine tools.
2. Preload Grade: Offers options of no preload (C0), light preload (C1), medium preload (C2), and heavy preload (C3). Higher preload results in higher rigidity, but also slightly increases friction and temperature rise.
3. Sealing and Lubrication:
End seals: Standard configuration, effectively preventing dust ingress.
Bottom seals: Available on some models, providing bottom protection.
Grease nipple: Convenient for daily maintenance and lubrication.
4. Selection Points:
Confirm dimensions: Select the guideway width (e.g., HGH15, HGH20, HGH30, etc.) based on load, torque, and space.
Select model: Choose CA (flange type) or HA (square type) slider based on installation space and method.
Determine accuracy and preload: Select the accuracy grade and preload grade based on motion accuracy and rigidity requirements.
Applications
The High Assembly HGH-CA/HA Series Linear Guideway, with its comprehensive and balanced superior performance, is widely used in:
CNC machine tools: X/Y/Z axes of machining centers, CNC milling machines, and lathes.
Precision automation: Linear motion units of laser cutting/welding machines, semiconductor packaging equipment, and precision measuring machines.
Industrial robots: Seventh axis (ground rail) of large robots, guiding mechanisms of handling robots.
Special equipment: High-demand fields such as medical devices, printing machinery, and glass cutting equipment.
The High Assembly HGH-CA/HA Series Linear Guideway is a "versatile cornerstone product" in the field of industrial linear motion. It successfully achieves the optimal balance between high rigidity, high load capacity, high precision, and ease of installation. Choosing this series means you are selecting a solution for your equipment that has been proven reliable and high-performing in global markets for decades, representing a solid step towards building stable, precise, and efficient automated systems.
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) |
Weight |
| H |
H1 |
N |
W |
B |
B1 |
C |
L1 |
L |
K1 |
G |
M×I |
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 |
| HGH15CA |
28 |
4.3 |
9.5 |
34 |
26 |
4 |
26 |
39.4 |
61.4 |
10 |
5.3 |
M4×5 |
6 |
7.95 |
7.7 |
15 |
15 |
7.5 |
5.3 |
4.5 |
60 |
20 |
M4x16 |
11.38 |
16.97 |
0.12 |
0.10 |
0.10 |
0.18 |
1.45 |
| HGH20CA |
30 |
4.6 |
12 |
44 |
32 |
6 |
36 |
50.5 |
77.5 |
12.25 |
12 |
M5×6 |
8 |
6 |
7 |
20 |
17.5 |
9.5 |
8.5 |
6 |
60 |
20 |
M5×16 |
17.75 |
27.76 |
0.27 |
0.20 |
0.20 |
0.30 |
2.21 |
| HGH20HA |
50 |
65.2 |
92.2 |
12.6 |
21.18 |
35.9 |
0.35 |
0.35 |
0.35 |
0.39 |
| HGH25CA |
40 |
5.5 |
12.5 |
48 |
35 |
6.5 |
35 |
58 |
84 |
16.8 |
12 |
M6×8 |
8 |
10 |
9 |
23 |
22 |
11 |
9 |
7 |
60 |
20 |
M6×20 |
26.48 |
36.49 |
0.42 |
0.33 |
0.33 |
0.51 |
3.21 |
| HGH25HA |
50 |
78.6 |
104.6 |
19.6 |
32.75 |
49.44 |
0.56 |
0.57 |
0.57 |
0.69 |
| HGH30CA |
45 |
6 |
16 |
60 |
40 |
10 |
40 |
70 |
97.4 |
20.25 |
12 |
M8×10 |
8.5 |
9.5 |
13.8 |
28 |
26 |
14 |
12 |
9 |
80 |
20 |
M8×25 |
38.74 |
52.19 |
0.66 |
0.53 |
0.53 |
0.88 |
4.47 |
| HGH30HA |
60 |
93 |
120.4 |
21.75 |
47.27 |
69.19 |
0.88 |
0.92 |
0.92 |
1.16 |
| HGH35CA |
55 |
7.5 |
18 |
70 |
50 |
10 |
50 |
80 |
112.4 |
20.6 |
12 |
M8×12 |
10.2 |
16 |
19.6 |
34 |
29 |
14 |
12 |
9 |
80 |
20 |
M8×25 |
49.52 |
69.19 |
1.16 |
0.81 |
0.81 |
1.45 |
6.30 |
| HGH35HA |
72 |
105.8 |
138.2 |
22.5 |
60.21 |
91.63 |
1.54 |
1.40 |
1.40 |
1.92 |
| HGH45CA |
70 |
9.5 |
20.5 |
86 |
60 |
13 |
60 |
97 |
139.4 |
23 |
12.9 |
M10×17 |
16 |
18.5 |
30.5 |
45 |
38 |
20 |
17 |
14 |
105 |
22.5 |
M12×35 |
77.57 |
102.71 |
1.98 |
1.55 |
1.55 |
2.73 |
10.41 |
| HGH45HA |
80 |
128.8 |
171.2 |
28.9 |
94.54 |
136.46 |
2.63 |
2.68 |
2.68 |
3.61 |
| HGH55CA |
80 |
13 |
23.5 |
100 |
75 |
12.5 |
75 |
117.7 |
166.7 |
27.35 |
12.9 |
M12×18 |
17.5 |
22 |
29 |
53 |
44 |
23 |
20 |
16 |
120 |
30 |
M14×45 |
114.44 |
148.33 |
3.69 |
2.64 |
2.64 |
4.17 |
15.08 |
| HGH55HA |
95 |
155.8 |
204.8 |
36.4 |
139.35 |
196.2 |
4.88 |
4.57 |
4.57 |
5.49 |
| HGH65CA |
90 |
15 |
31.5 |
126 |
76 |
25 |
70 |
144.2 |
200.2 |
43.1 |
12.9 |
M16×20 |
25 |
15 |
15 |
63 |
53 |
26 |
22 |
18 |
150 |
35 |
M16×50 |
163.63 |
215.33 |
6.65 |
4.27 |
4.27 |
7.00 |
21.18 |
| HGH65HA |
120 |
203.6 |
259.6 |
47.8 |
208.36 |
303.13 |
9.38 |
7.38 |
7.38 |
9.82 |
Drawings

Supports Product Combination Selection
Production Capacity
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Cyclone Milling Machines
LWN160-6000mm Leistritz Cyclone milling machines imported directly from Germany, the ball screw shaft precision can be C3, C5, and C7 the max length can be 7000mm |
Rolled Thread CNC Machines
PR-40CNC Profiroll rolled thread ball screw machines imported directly from Germany the ball screw shaft precision can be C5, C7 -C10 |

|
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Rolled Thread CNC Machines
ST-20.2 and ST-347.7 rolled thread ball screw machines from TaiWan. The ball screw shaft precision can be C7 - C10 |
Ball Screw Assembly Workshop
We conduct nut assembly in a constant temperature workshop, all workers having decades of work experience and zero clearance between the screw and nut. |
 |
 |
Ball Screw Assembly Workshop
One ball screw shaft matches one ball screw nut. Because each ball screw shaft has a very tiny different tolerance. There are dozens of different ball sizes for different screw shaft. Our ball screw shaft and nut can be interchanged with the Taiwan TBI ball screw shaft and nut very well. |
Linear Guideway Selection
Non-interchangeable type:

Note:
1.The roman numerals express a matched set of rails.
2.No symbol indicates standard protection (end seal and bottom seal)
ZZ:End seaL bottom sealand scraper
KK: Double seals, bottom seal and scraper
DD: Double seals and bottom seal
3.Block type HGL is the low profile design of HGH (square type), the assembled height is same as HGW (flange type) in same size.
Model Number of HG Rail:

Interchangeable type:

Linear Guideway Preload & Precision Instruction
Preload Classes
offers three classes of standard preload for various applications and conditions.
| Class |
Code |
Preload |
Condition |
Examples of Application |
| Light Preload |
ZO |
0~0.02C |
Certain load direction, low impact, low precision required |
Transportation devices, auto-packing machines, X-Y axis for general industrial machines, welding machines, welders |
| Medium Preload |
ZA |
0.05C~0.07C |
High precision required |
Machining centers,Z axis for general industrial machines, EDM,NC lathes, Precision X-Y tables, measuring equipment |
| Heavy Preload |
ZB |
0.10C~0.12C |
High rigidity required, with vibration and impact |
Machining centers, grinding machines,NC lathes,horizontal and vertical milling machines, Z axis of machine tools, Heavy cutting machines |
| Class |
Interchangeable Guideway |
Non-Interchangeable Guideway |
| Preload classes |
Z0,ZA |
Z0,ZA,ZB |
Besides the standard top mounting type, WANGONG also offers the bottom mounting type of rails to customers.
| Mounting from Top |
Mounting from bottom |
 |
 |
Acouracy Classes
Thp accuracy of HG series can be classified into normal (C), high (H), precision (P), super precision (SP), ultra precision (UP), five classes. Please choose the class by referring the accuracy of applied equipment.

Accuracy Standards
| Item |
HG-15,20 |
| Accuracy Classes |
Normal (C) |
High (H) |
Precision (P) |
| Dimensional tolerance of height H |
±0.1 |
±0.03 |
±0.015 |
| Dimensional tolerance of width N |
±0.1 |
±0.03 |
±0.015 |
| Variation of height H |
0.02 |
0.01 |
0.006 |
| Variation of width N |
0.02 |
0.01 |
0.006 |
| Running parallelism of block surface C to surface A |
See Table |
| Running parallelism of block surface D to surface B |
See Table |
| Item |
HG-25,30,35 |
| Accuracy Classes |
Normal (C) |
High (H) |
Precision (P) |
| Dimensional tolerance of height H |
±0.1 |
±0.04 |
±0.02 |
| Dimensional tolerance of width N |
±0.1 |
±0.04 |
±0.02 |
| Variation of height H |
0.02 |
0.015 |
0.007 |
| Variation of width N |
0.03 |
0.015 |
0.007 |
| Running parallelism of block surface C to surface A |
See Table |
| Running parallelism of block surface D to surface B |
See Table |
| Item |
HG-45,55 |
| Accuracy Classes |
Normal (C) |
High (H) |
Precision (P) |
| Dimensional tolerance of height H |
±0.1 |
±0.05 |
±0.025 |
| Dimensional tolerance of width N |
±0.1 |
±0.05 |
±0.025 |
| Variation of height H |
0.03 |
0.015 |
0.007 |
| Variation of width N |
0.03 |
0.02 |
0.01 |
| Running parallelism of block surface C to surface A |
See Table |
| Running parallelism of block surface D to surface B |
See Table |
Acouracy of Running Parallelism
| Rail Length (mm) |
Accuracy (μm) |
| C |
H |
P |
SP |
UP |
| 0~100 |
12 |
7 |
3 |
2 |
2 |
| 100~200 |
14 |
9 |
4 |
2 |
2 |
| 200~300 |
15 |
10 |
5 |
3 |
3 |
| 300~500 |
17 |
12 |
6 |
3 |
3 |
| 500~700 |
20 |
13 |
7 |
4 |
2 |
| 700~900 |
22 |
15 |
8 |
5 |
3 |
| 900~1,100 |
24 |
16 |
9 |
6 |
3 |
| 1,100~1,500 |
26 |
18 |
11 |
7 |
4 |
| 1,500~1,900 |
28 |
20 |
13 |
8 |
4 |
| 1,900~2,500 |
31 |
22 |
15 |
10 |
5 |
| 2,500~3,100 |
33 |
25 |
18 |
11 |
6 |
| 3,100~3,600 |
36 |
27 |
20 |
14 |
7 |
| 3,600~4,000 |
37 |
28 |
21 |
15 |
7 |