HGH45CA Linear Guide Block — 45 mm Square Type, Interchangeable
The HGH45CA is a 45 mm square-type block for the heaviest standard HG axes: large machine tools, presses and gantry systems. It follows the HG mounting pattern for direct replacement. Interchangeable supply covers Z0/ZA preload and C/H/P accuracy.
Specifications
| Model | HGH45CA |
| Size | 45 mm |
| Block type | Square, heavy load (C) |
| Mounting | Top tapped (A) |
| Accuracy grade | C / H / P (interchangeable) |
| Preload | Z0 / ZA (interchangeable) |
| Matching rail | HGR45 |
| Dynamic load C (kN) | 77.57 |
| Static load C0 (kN) | 155.93 |
| Block height H (mm) | 70 |
| Block width W (mm) | 86 |
| Block length L (mm) | 139.4 |
Complete dimension table (mm) — HGH45CA
| H | 70 |
| H1 | 9.5 |
| N | 20.5 |
| W | 86 |
| B | 60 |
| B1 | 13 |
| C block length | 60 |
| L1 | 97 |
| L | 139.4 |
| K1 | 23 |
| G | 12.9 |
| M | M10x17 |
| H2 | 18.5 |
| H3 | 30.5 |
| Wr | 45 |
| Hr | 38 |
| D | 20 |
| h | 17 |
| d | 14 |
| P | 105 |
| E | 22.5 |
| Rail bolt | M12x35 |
| Dynamic C | 77.57 kN |
| Static C0 | 155.93 kN |
| MR | 3.01 kN-m |
| MP | 2.35 kN-m |
| MY | 2.35 kN-m |
| Block weight | 2.73 kg |
| Rail weight | 8.68 kg/m |
Transcribed from the current product catalogue. 2D drawing and STEP model on request.
Options
- Dust protection codes: ZZ / KK / DD (standard series)
- Heavy-duty dust codes SH / ZH / KH / DH (HG20–45 only)
- Grease nipple or oil port
- Special machining on request
Where this block is used
The square block carries load in all four directions and bolts down onto a machined face, so it suits the X, Y and Z axes of machining centres, grinders and gantry frames where the carriage is bolted from above. At this size the block is normally paired with one rail per axis; two rails are used when the table is wide enough that a single rail would let the carriage rock.
Mounting: rails and blocks are bolted to machined faces. Rail bolts are tightened from the centre outwards in the sequence given in the catalogue, and running accuracy is checked with a dial gauge before the carriage is loaded. Lubrication is by grease nipple or oil port; the re-greasing interval follows load and duty cycle, so it is agreed with the customer rather than fixed on the datasheet.
Matching rail
HGR45 rail is cut to order from 100 mm. See rail options.
Downloads
STEP (AP214) model and 2D drawing for this size are available on request — ask us and we will email them.
FAQ
| Is HGH45CA interchangeable with other HG-standard blocks? | Yes. Mounting hole spacing and rail profile follow the HG standard, so the block fits existing HG45 rails. |
| Can the block and rail be bought separately? | Yes, in Z0/ZA preload and C/H/P accuracy. SP/UP accuracy and ZB preload are supplied as a matched set only. |
| Which rail length do I need? | Use L = (n − 1) × P + 2 × E with P = 105 mm and E = 22.5 mm for HGR45. |