QH Series
QH Series Heavy Load Type Linear Guideway, with SynchMotion® Technology
- Block Type
- Square (H), Flange (W)
- Model Size
- 15 - 45
- Load Type
- Heavy, Super Heavy
- Dynamic Load Rating
- 17.94 [kN] - 144.13 [kN]
Based on a four-row circular-arc contact, Hiwin’s QH linear guideway features SynchMotion™ Technology, ensuring smooth, quiet movement and longer life. It is highly applicable in high-tech industries requiring high speed, low noise, and reduced dust. The QH and HG series are interchangeable.
QH shares identical rails with the HG Series: a drop-in quiet upgrade on existing HG axes, no redesign required. View HG Series →
-
4,000 km
Load test at 5 kN — no raceway damage
-
130 m/min
High-speed test over 9,500 km
-
↓5 dB
Noise vs conventional guideways
Applications
- Precision measurement equipment
- Semiconductor equipment
- Automation equipment
- Laser engraving machine
- High-tech industry
Variants
Square (QHH) blocks are narrower and taller, the default for automation frames. Flange (QHW) blocks sit lower and bolt from the top or the bottom, for mounting where you can’t reach through the block. The last letter of a flange model is its mounting: A from the top, B from the bottom, C either way.
| Part Number | Block Type | Model Size (mm) | Load Type | Dynamic Load Rating (kN) | Configure |
|---|---|---|---|---|---|
| QHH15CA | Square | 15 | Heavy | 17.94 | Configure ↗ |
| QHH20CA | Square | 20 | Heavy | 30 | Configure ↗ |
| QHH20HA | Square | 20 | Super Heavy | 35.7 | Configure ↗ |
| QHH25CA | Square | 25 | Heavy | 41.9 | Configure ↗ |
| QHH25HA | Square | 25 | Super Heavy | 50.61 | Configure ↗ |
| QHH30CA | Square | 30 | Heavy | 58.26 | Configure ↗ |
| QHH30HA | Square | 30 | Super Heavy | 70.32 | Configure ↗ |
| QHH35CA | Square | 35 | Heavy | 78.89 | Configure ↗ |
| QHH35HA | Square | 35 | Super Heavy | 95.23 | Configure ↗ |
| QHH45CA | Square | 45 | Heavy | 119.4 | Configure ↗ |
| QHH45HA | Square | 45 | Super Heavy | 144.13 | Configure ↗ |
| QHW15CA | Flange (top mount) | 15 | Heavy | 17.94 | Configure ↗ |
| QHW20CA | Flange (top mount) | 20 | Heavy | 30 | Configure ↗ |
| QHW20HA | Flange (top mount) | 20 | Super Heavy | 35.7 | Configure ↗ |
| QHW25CA | Flange (top mount) | 25 | Heavy | 41.9 | Configure ↗ |
| QHW25HA | Flange (top mount) | 25 | Super Heavy | 50.61 | Configure ↗ |
| QHW30CA | Flange (top mount) | 30 | Heavy | 58.26 | Configure ↗ |
| QHW30HA | Flange (top mount) | 30 | Super Heavy | 70.32 | Configure ↗ |
| QHW35CA | Flange (top mount) | 35 | Heavy | 78.89 | Configure ↗ |
| QHW35HA | Flange (top mount) | 35 | Super Heavy | 95.23 | Configure ↗ |
| QHW45CA | Flange (top mount) | 45 | Heavy | 119.4 | Configure ↗ |
| QHW45HA | Flange (top mount) | 45 | Super Heavy | 144.13 | Configure ↗ |
| QHW15CB | Flange (bottom mount) | 15 | Heavy | 17.94 | Configure ↗ |
| QHW20CB | Flange (bottom mount) | 20 | Heavy | 30 | Configure ↗ |
| QHW20HB | Flange (bottom mount) | 20 | Super Heavy | 35.7 | Configure ↗ |
| QHW25CB | Flange (bottom mount) | 25 | Heavy | 41.9 | Configure ↗ |
| QHW25HB | Flange (bottom mount) | 25 | Super Heavy | 50.61 | Configure ↗ |
| QHW30CB | Flange (bottom mount) | 30 | Heavy | 58.26 | Configure ↗ |
| QHW30HB | Flange (bottom mount) | 30 | Super Heavy | 70.32 | Configure ↗ |
| QHW35CB | Flange (bottom mount) | 35 | Heavy | 78.89 | Configure ↗ |
| QHW35HB | Flange (bottom mount) | 35 | Super Heavy | 95.23 | Configure ↗ |
| QHW45CB | Flange (bottom mount) | 45 | Heavy | 119.4 | Configure ↗ |
| QHW45HB | Flange (bottom mount) | 45 | Super Heavy | 144.13 | Configure ↗ |
| QHW15CC | Flange (top or bottom) | 15 | Heavy | 17.94 | Configure ↗ |
| QHW20CC | Flange (top or bottom) | 20 | Heavy | 30 | Configure ↗ |
| QHW20HC | Flange (top or bottom) | 20 | Super Heavy | 35.7 | Configure ↗ |
| QHW25CC | Flange (top or bottom) | 25 | Heavy | 41.9 | Configure ↗ |
| QHW25HC | Flange (top or bottom) | 25 | Super Heavy | 50.61 | Configure ↗ |
| QHW30CC | Flange (top or bottom) | 30 | Heavy | 58.26 | Configure ↗ |
| QHW30HC | Flange (top or bottom) | 30 | Super Heavy | 70.32 | Configure ↗ |
| QHW35CC | Flange (top or bottom) | 35 | Heavy | 78.89 | Configure ↗ |
| QHW35HC | Flange (top or bottom) | 35 | Super Heavy | 95.23 | Configure ↗ |
| QHW45CC | Flange (top or bottom) | 45 | Heavy | 119.4 | Configure ↗ |
| QHW45HC | Flange (top or bottom) | 45 | Super Heavy | 144.13 | Configure ↗ |
Part numbers & options
How a part number reads
QH W 25 C A E 2 R 1600 E ZA P M II + KK/E2+RC
- QH
- Series
- W
- Block type — W flange · H square
- 25
- Model size — 15, 20, 25, 30, 35, 45
- C
- Load type — C heavy · H super heavy
- A
- Block mounting — A top · B bottom · C both
- E
- Special block (blank = standard block)
- 2
- Blocks per rail
- R
- Rail mounting — R from top · T from bottom
- 1600
- Rail length (mm)
- E
- Special rail (blank = standard rail)
- ZA
- Preload — Z0 light · ZA medium · ZB heavy
- P
- Precision — C, H, P, SP, UP
- M
- Stainless steel (blank = carbon steel)
- II
- Rails per axis
- KK
- Dust protection — ZZ, KK, DD (blank = standard seals)
- E2
- Self-lubricant
- RC
- Reinforced cap
The configurator assembles this number for you, with drawings and 3D CAD. Configure ↗
Accuracy classes
Five classes, chosen from the accuracy of the applied equipment.
- C Normal — General transport and automation
- H High — The workhorse class for most machines
- P Precision — Precision measurement and semiconductor
- SP Super precision — High-accuracy machine tools
- UP Ultra precision — The tightest running parallelism — to 2 µm
Preload
Preload multiplies rigidity, matched to load direction and impact.
- Z0 Light — Transport devices, packing machines, welders
- ZA Medium — High-precision axes, EDM, NC lathes, measuring
- ZB Heavy — Machining centers — vibration and impact loads
Dust protection
Seal packages appended to the model number.
- — Standard — End seal + bottom seal
- ZZ Scraper — End seal, bottom seal + scraper
- DD Double seals — Double seals + bottom seal
- KK Full package — Double seals, bottom seal + scraper
Material
- — Carbon steel — Standard
- M Stainless steel — Available for QH15, 20, 25
Other Linear Guideways
How buying works
Spec it in the configurator: drawings, 3D CAD, and a quote to follow.
HIWIN series are configured to your application, not bought off the shelf. Start from your loads and speeds if you are still choosing a size.
Rather talk it through? Request a quote from an application engineer.