Roku-Roku HC-878
This model was not found in Roku-Roku's current lineup when we checked on 2026-10-03 . It may be a superseded or older model; the specifications below are as we last recorded them.
Key Specifications
X Travel
Y Travel
Z Travel
Spindle Taper
Table Size
Spindle Power
How much does the Roku-Roku HC-878 cost?
Estimated price range
Our best estimate for a vertical machining centers (vmc) in this class — not a quote from Roku-Roku. Configuration moves it a long way.
Overview
The Roku-Roku HC-878 is a vertical machining center with an HSK-E40 spindle, a table rated for 800 kg (1,764 lb) and a machine weight of 7,500 kg (16,535 lb). It no longer appears in Roku-Roku's current lineup. The listed figures combine two sets of rows that disagree on the travels, the spindle and the tool changer, so only the rows that agree can be used with any confidence.
Axis motion is one of the agreed areas. Rapid traverse is 36 m/min (1,417 IPM) in X and Y and 30 m/min (1,181 IPM) in Z, with a cutting feed rate of 20 m/min (787 IPM). The cutting feed is a little over half the X and Y rapid, so long finishing passes at fine stepovers are bounded by the feed limit and not by the rapids.
Positioning accuracy is listed at +/-0.002 mm (+/-0.00008 in) and repeatability at +/-0.001 mm (+/-0.00004 in). Figures at that level only hold in a temperature-controlled room on a sound foundation, and a 7,500 kg (16,535 lb) machine carrying up to 800 kg (1,764 lb) on the table needs the floor checked for both.
Three groups of rows need settling before the machine is matched to a job. Travels appear in millimetres in one set and in inches in another, and the two do not convert to each other in X and Y. Spindle speed and spindle power are each listed twice with different values, and the tool changer capacity differs widely between its two rows. Both sets agree that the table is 750 mm (29.5 in) wide. The control is a Fanuc 31i-B5.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 800 mm (31.5 in) |
| Y-Axis Travel | 700 mm (27.6 in) |
| Z-Axis Travel | 400 mm (15.7 in) |
| Table Size | 900 x 750 mm (35.4 x 29.5 in) |
| Max Table Load | 800 kg (1,764 lb) |
| Spindle Speed | 30,000 RPM (direct-drive) |
| Spindle Taper | HSK-E40 |
| Spindle Motor Power | 15 kW (20 HP) |
| Rapid Traverse Xy | 36 m/min (1,417 IPM) |
| Rapid Traverse Z | 30 m/min (1,181 IPM) |
| Cutting Feed Rate | 20 m/min (787 IPM) |
| Positioning Accuracy | +/-0.002 mm (+/-0.00008 in) |
| Repeatability | +/-0.001 mm (+/-0.00004 in) |
| ATC Capacity | 60 tools |
| CNC Control | Fanuc 31i-B5 |
| Machine Weight | 7,500 kg (16,535 lb) |
| X | 33.5" |
| Y | 29.5" |
| Z | 16" |
| Power | 8.4 hp |
| RPM | 32,000 RPM |
| ATC | 12 |
| Table W | 29.5" |
| Table L | 37.4" |
Specifications sourced from machinetools.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Positioning accuracy of +/-0.002 mm (+/-0.00008 in) and repeatability of +/-0.001 mm (+/-0.00004 in)
- Table rated for 800 kg (1,764 lb) and 750 mm (29.5 in) wide
- Rapid traverse of 36 m/min (1,417 IPM) in X and Y and 30 m/min (1,181 IPM) in Z
- Cutting feed rate up to 20 m/min (787 IPM)
- HSK-E40 spindle taper with a Fanuc 31i-B5 control
Limitations
- Travels are listed twice with values that do not agree in X and Y, so the envelope must be measured
- Spindle speed, spindle power and tool changer capacity each appear with two different values
- HSK-E40 is a small taper, which limits tool diameter and heavy roughing
- At 7,500 kg (16,535 lb) the machine needs rigging and a checked floor
Best For
Frequently Asked Questions
01
The table does not settle it. One set of rows gives the travels in millimetres with inch equivalents and another gives different inch values for X and Y, while Z is close in both. The table width of 750 mm (29.5 in) is the same in both sets. Measure the strokes on the machine before planning a part around them.
02
Positioning accuracy is listed at +/-0.002 mm (+/-0.00008 in) and repeatability at +/-0.001 mm (+/-0.00004 in). Ask for a recent laser or ballbar report on a used machine, since figures of this kind assume controlled conditions.
03
Rapid traverse is 36 m/min (1,417 IPM) in X and Y and 30 m/min (1,181 IPM) in Z. The cutting feed rate is 20 m/min (787 IPM). The control is a Fanuc 31i-B5.
04
The HC-878 is the heavier machine: 7,500 kg (16,535 lb) against 5,500 kg (12,125 lb) for the HC-658. Both are listed with an HSK-E40 spindle taper. The HC-658 table lists an integrated graphite dust management system, and no such row appears for the HC-878.
More from Roku-Roku
Other Vertical Machining Centers (VMC)
Johnford VMC-850
Vision Wide SV-1470
Chevalier EM2040L
Vision Wide XML-57
Hardinge XR-610
