HJG-DZ
Roller Linear Guide
Roller guide in the HJG-D family. Rollers give high contact rigidity, strong vibration absorption, and high load capacity. Accuracy grades P, H, and SP.
HJG-DZ Roller Linear Guideway
HJG-DZ is the roller series in the HJG-D family. Rollers are the rolling elements, which the catalog describes as high contact rigidity, strong vibration absorption, and high load capacity. Rails and blocks are ground alloy steel. End seals, scrapers, and an oil cup are fitted. A keeper chain between the rollers holds grease so the guide can run longer between services.
This page covers the flange block: code Z, threaded holes ZA or plain holes ZB, with suffix L for the extended block. Preload is H1 light, H2 medium, or H3 heavy. Published accuracy is P, H, and SP. Catalog sizes inside the portfolio range of 15–65 mm are 35, 45, 55, and 65. The specification tables also list 85 and 100 mm. Rectangle blocks (ZC) are described on the rectangle-block page. Rated loads are in the catalog.
Get a QuoteDetailed Parameters
| Series | HJG-DZ (HJG-D family, roller) |
| Rolling element | Rollers |
| Character | High contact rigidity, vibration absorption, high load capacity |
| Accuracy grades | P, H, SP |
| Preload | H1 light, H2 medium, H3 heavy |
| Rail sizes | 35, 45, 55, 65 mm in the published 15–65 mm range; catalog tables also list 85 and 100 mm |
| Block on this page | Flange Z; threaded ZA or plain ZB; extended suffix L |
| Also in the catalog | Rectangle block ZC |
| Raceway hardness | Not less than HRC 58 |
| Lubrication | Oil cup; grease stored in the roller keeper chain |
| Catalog | Dimensions and loads in the HJG linear-motion catalog |
Available Options & Customizations
- Accuracy grades P, H, and SP
- Block form and hole type from the catalog code
- Standard or extended block where the series lists suffix L
- Preload class listed for that series
- Rail length within the catalog G limits
- Full dimensions in the HJG catalog PDF
Why HJG-DZ
HJG-DZ is the roller guide for axes that need more contact rigidity and load capacity than the four-row ball guides HJG-DA and HJG-DB.
| Characteristic | HJG-DZ (Roller Type) | HJG-DA (Ball Type) |
|---|---|---|
| Rigidity | Very High -- line contact distributes force over larger area | High -- point contact at each ball interface |
| Load Capacity | Higher contact rigidity and load capacity than the four-row ball guide (catalog description) | Good -- adequate for light to medium load applications |
| Maximum Speed | Moderate to High -- limited by roller recirculation dynamics | Very High -- ball recirculation enables higher traversing speeds |
| Friction | Slightly higher rolling resistance due to larger contact patch | Very Low -- minimal rolling friction for high-speed applications |
| Vibration Damping | Superior -- larger contact area absorbs more vibrational energy | Good -- lower mass but less inherent damping |
| Wear Resistance | Excellent -- lower contact pressure extends raceway life | Good -- higher contact stress under equivalent loads |
| Application | Heavy-duty CNC, machining centers, large robots, press brakes | General automation, pick-and-place, light CNC, measuring equipment |
Why Choose HJG-DZ Roller Guideways
The HJG-DZ Series is engineered for applications where standard ball guideways reach their performance limits. From heavy cutting forces to demanding positioning accuracy, HJG-DZ delivers.
Roller contact
Rollers provide the high contact rigidity described for HJG-DZ.
Vibration absorption
The catalog lists strong vibration absorption and high load capacity.
Preload H1–H3
Light, medium, or heavy preload for the duty of the axis.
Flange or rectangle
Flange block Z, or rectangle block ZC, threaded or plain holes.
Keeper-chain grease
The chain between rollers stores grease for a longer service interval.
Ground raceways
Raceway hardness is not less than HRC 58.
Long Service Life
Lower contact pressure, superior contamination protection, and optimized lubrication combine to deliver exceptional service life even in the most demanding 24/7 production environments.
Specify an HJG-DZ guide
Send rail size, flange or rectangle block, preload, accuracy grade, and rail length. We will match the HJG-DZ code from the catalog.
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