KRC HBM-20F
Image: krcmachinetoolsolutions.com, KRC
Key Specifications
Max Spindle
Spindle Taper
Spindle Power
boring spindle diameter
spindle torque
x axis travel
How much does the KRC HBM-20F cost?
Price estimate
We do not have a price for the KRC HBM-20F that we can stand behind, so we show no number. Configuration, options and installation move the final price a long way: a quote is the reliable figure.
Overview
Middle of KRC's floor-type range, the KRC HBM-20F pairs a 200 mm (7.87 in) boring spindle with 100 kW (134 HP) / 126 kW (169 HP) of listed spindle power and a 2,000 rpm top speed. It is a travelling-column horizontal boring mill: the column carries the headstock along the bed while the workpiece stays put.
Torque is the reason to pick this size. KRC lists 18,000 Nm (13,280 ft-lb) / 22,600 Nm (16,670 ft-lb), against 10,000 Nm (7,376 ft-lb) / 12,400 Nm (9,146 ft-lb) on the HBM-16F. What it gives up is speed. The HBM-16F spindle reaches 3,150 rpm and its X and Y rapids are 16,000 mm/min (630 ipm); this machine moves at 12,000 mm/min (472 ipm) on the same two axes.
X starts at 4,000 mm (157.5 in) and is extended by 1,000 mm (39.4 in) sections. Y is chosen between 2,500 mm (98.4 in) and 5,000 mm (196.9 in). The ram travels 1,500 mm (59 in) and the boring spindle 1,250 mm (49 in), which KRC adds up to 2,750 mm (108.3 in) of Z + W.
The spindle taper row reads ISO 50/60, so the larger taper is on the table for this size, something the HBM-16F row does not show. A 2,500 mm (98.4 in) x 2,500 mm (98.4 in) rotary table rated at 30,000 kg (66,060 lb) is listed with the machine. For that table KRC names a crossed roller or hydrostatic bearing and a dual pinion drive with split worm transmission.
Full Specifications
| Parameter | Value |
|---|---|
| Boring Spindle Diameter | 200 mm (7.87 in) |
| Spindle Taper | ISO 50/60 |
| Max Spindle Speed | 2,000 rpm |
| Spindle Motor Power | 100 kW (134 HP) / 126 kW (169 HP) |
| Spindle Torque | 18,000 Nm (13,280 ft-lb) / 22,600 Nm (16,670 ft-lb) |
| X Axis Travel | 4,000 mm (157.5 in) + N° x 1,000 mm (39.4 in) (column travel) |
| Y Axis Travel | 2,500 mm (98.4 in) to 5,000 mm (196.9 in) (spindle head travel) |
| Z Axis Travel | 1,500 mm (59 in) (ram travel) |
| W Axis Travel | 1,250 mm (49 in) (boring spindle travel) |
| Z W Axis Travel | 2,750 mm (108.3 in) (boring spindle and ram travel) |
| Rapid Traverse Xy | 12,000 mm/min (472 ipm) |
| Rapid Traverse Zw | 10,000 mm/min (394 ipm) |
| Rotary Table Size | 2,500 mm (98.4 in) x 2,500 mm (98.4 in) |
| Max Table Load | 30,000 kg (66,060 lb) |
Specifications sourced from krcmachinetoolsolutions.com — verified 2026-10-05
Strengths & Limitations
Strengths
- Maximum torque listed as 18,000 Nm (13,280 ft-lb) / 22,600 Nm (16,670 ft-lb) from the 3 step gearbox headstock
- ISO 50/60 in the taper row, where the HBM-16F shows ISO 50
- Z + W reach of 2,750 mm (108.3 in), from 1,500 mm (59 in) of ram and 1,250 mm (49 in) of boring spindle travel
- Rotary table of 2,500 mm (98.4 in) x 2,500 mm (98.4 in) carrying 30,000 kg (66,060 lb)
- Y travel can be ordered up to 5,000 mm (196.9 in)
Limitations
- Spindle speed stops at 2,000 rpm, so small-diameter tools run below their best cutting speed
- X and Y rapids of 12,000 mm/min (472 ipm) are slower than the 16,000 mm/min (630 ipm) of the HBM-16F
- The two power and torque values in each pair are not labelled, so the continuous rating has to be confirmed with KRC
- No tool changer, control or accuracy rows appear in KRC's table for this model
Best For
Frequently Asked Questions
01
KRC lists maximum torque as 18,000 Nm (13,280 ft-lb) / 22,600 Nm (16,670 ft-lb) and spindle power as 100 kW (134 HP) / 126 kW (169 HP). The spindle is 200 mm (7.87 in) in diameter and runs to 2,000 rpm. The table does not label the two values in each pair, so ask KRC which is the continuous rating.
02
The taper row for this model reads ISO 50/60. KRC does not say on the page which of the two is the base configuration, and it states that all models can be configured with different heads, so name the taper you need when asking for a quotation.
03
X is 4,000 mm (157.5 in) plus extensions of 1,000 mm (39.4 in) each. Y runs from 2,500 mm (98.4 in) to 5,000 mm (196.9 in) depending on the column. Z, the ram, is 1,500 mm (59 in) and W, the boring spindle, is 1,250 mm (49 in). Rapids are 12,000 mm/min (472 ipm) on X and Y and 10,000 mm/min (394 ipm) on Z and W.
04
It depends on the part. The HBM-26F has a 260 mm (10.24 in) spindle, a 3,000 mm (118 in) square table for 40,000 kg (88,080 lb) and X travel from 6,000 mm (236.2 in), but its spindle is limited to 1,600 rpm. If the work fits a 2,500 mm (98.4 in) table and 30,000 kg (66,060 lb), the HBM-20F runs faster.