In the complete code QHW35CA precision linear guide, QHW35CA1R440ZAP, “P” represents the precision grade. The QHW35CA linear guide offers five precision grades, from highest to lowest: Ultra-High Precision (UP), Ultra-Precision (SP), Precision (P), High-Grade (H), and Standard (C).
HIWIN QHW35CA Precision Linear Guide Accuracy Grade Description:
Ordinary/General Grade C: For general machinery, packaging machinery, woodworking machinery, etc., where high precision requirements are not required.
High-Precision Grade H: For general industrial machinery, handling devices, automated equipment, etc., where cost-effectiveness is prioritized while maintaining a certain level of precision.
Precision Grade P: For automated production lines, industrial robots, CNC machining centers, precision testing instruments, etc., representing the most widely used high-precision choice.
Ultra-Precision Grade SP: For high-precision CNC machine tools, precision grinding machines, high-precision positioning platforms, etc., requiring extremely high positioning and movement accuracy.
Ultra-High Precision Grade UP: For nanometer-level machining centers, precision measuring equipment, semiconductor manufacturing equipment, etc., where extreme precision is required.

The QHW35CA linear guide is widely used in semiconductor manufacturing equipment, electronic automated production lines, medical and biological testing machines, high-speed CNC machine tools, and precision measuring instruments due to its quiet operation and low dust generation characteristics.
| HIWIN QHW-CA Linear Guide Model | |
| QHW15CA | QHW20CA |
| QHW20HA | QHW25CA |
| QHW25HA | QHW30CA |
| QHW30HA | QHW35CA |
| QHW35HA | QHW45CA |
| QHW45HA | |

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 |
Weight | ||||||||||||||||||||||||
| Mg
kN-m |
Mp
kN-m |
My
kN-m |
Block
kg |
Rail
kg/m |
||||||||||||||||||||||||||||
| H | H₁ | N | W | B | B₁ | C | L1 | L | K₁ | K₂ | G | M | T | T₁ | H₂ | H₃ | Wg | Hg | D | h | d | P | E | (mm) | C(kN) | C₀ (kN) | ||||||
| QHW30CA | 42 | 6 | 31 | 90 | 72 | 9 | 52 | 70
93 |
97.4
120.4 |
13.5 | 6.25 | 12 | M10 | 8.5 | 16 | 6.5 | 6 | 28 | 26 | 14 | 12 | 9 | 80 | 20 | M8x25 | 58.26 | 66.34 | 0.6 | 0.5 | 0.5 | 1.09 | 4.47 |
| QHW30HA | 25.75 | 70.32 | 88.45 | 0.83 | 0.89 | 0.89 | 1.44 | |||||||||||||||||||||||||
| QHW35CA | 48 | 7.5 | 33 | 100 | 82 | 9 | 62 | 80
105.8 |
113.6
139.4 |
13
25.9 |
7.5 | 12 | M10 | 0.1 | 18 | 8.5 | 6.5 | 34 | 29 | 14 | 12 | 9 | 80 | 20 | M8x25 | 78.89 | 86.66 | 1.07 | 0.76 | 0.76 | 1.56 | 6.30 |
| QHW35HA | 95.23 | 115.55 | 1.45 | 1.33 | 1.33 | 2.06 | ||||||||||||||||||||||||||
| QHW45CA | 60 | 9.2 | 37.5 | 120 | 100 | 10 | 80 | 97
128.8 |
139.4
171.2 |
13 | 10 | 2.9 | M12 | 5. | 22 | 8.5 | 10 | 45 | 38 | 20 | 17 | 14 | 05 | 22.5 | M12x35 | 119.4 | 135.42 | 1.83 | 1.38 | 1.38 | 2.79 | 10.41 |
| QHW45HA | 28.9 | 144.13 | 180.56 | 2.47 | 2.41 | 2.41 | 3.69 | |||||||||||||||||||||||||
| Note:1 kgf =9.81N | ||||||||||||||||||||||||||||||||

