Fryer HB-70
Image: fryermachine.com, Fryer
Key Specifications
Max Spindle
Spindle Taper
Tool Capacity
Table Size
Spindle Power
Accuracy
How much does the Fryer HB-70 cost?
Price estimate
We do not have a price for the Fryer HB-70 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
The Fryer HB-70 is a table-type horizontal boring mill with a moving quill: 70 x 50 x 36 in (1,778 x 1,270 x 914 mm) of X, Y and Z travel plus a 4.330 in (110 mm) boring bar that feeds 20 in (508 mm) on a fully programmable W axis. It shares its 36 x 80 in (914 x 2,032 mm) table and 10,000 lb (4,536 kg) load rating with the fixed spindle HR-70.
The bar is what separates the two. On the HR-70 the spindle nose stays in the head, so a deep bore needs a long, overhung tool. On the HB-70 the bar itself travels into the part, keeping the tool short and supported, and W can be programmed together with Z. Reaching inside a housing, boring two in-line seats from one side and back-facing through a bore are the typical uses.
The drive is tuned for that work. Spindle speed is 30 - 3,000 rpm, half the top speed of the HR-70, with 40 hp (29.8 kW) peak and 360 ft-lb (488 Nm) at 350 rpm. Fryer's table gives 1,400 ft-lb (1,898 Nm) with the optional 2-speed gearbox. Coolant through the spindle is listed as standard on this series.
Around the bar it is a complete machining center: a 24 station arm type changer for CAT 50 or BT-50 tools up to 33.0 lb, 750 ipm (19.1 m/min) rapids and a built-in rotary table option. For the HB-70 Fryer lists a 36" built-in table and a rectangular 60" x 48" table. The machine weighs 38,000 lb (17,237 kg) and needs 195 x 159 in (4,953 x 4,039 mm) of floor.
Full Specifications
| Parameter | Value |
|---|---|
| X Axis Travel | 70 in (1,778 mm) |
| Y Axis Travel | 50 in (1,270 mm) |
| Z Axis Travel | 36 in (914 mm); 46 in (1,168 mm) with the extended travel option |
| W Axis Travel | 20 in (508 mm) |
| Table Size | 36 x 80 in (914 x 2,032 mm) |
| Max Table Load | 10,000 lb (4,536 kg) |
| T-Slots | 5 / 0.866 in (22 mm) |
| Table Top to Floor | 40 in (1,016 mm) |
| Boring Bar Diameter | 4.330 in (110 mm) |
| Boring Bar Travel | 20.0 in (508 mm), fully programmable W axis |
| Spindle Motor Power | 40 hp (29.8 kW) peak |
| Max Spindle Speed | 30 - 3,000 rpm |
| Spindle Torque | 360 ft-lb (488 Nm) at 350 rpm; 1,400 ft-lb (1,898 Nm) with 2-speed gearbox |
| Spindle Speed Ranges | 1 range (2-speed gearbox optional) |
| Spindle Taper | CAT 50 or BT-50 |
| Distance Spindle Nose to Table Center | 7 - 43 in (178 - 1,092 mm) |
| Distance Spindle Center to Table Top | 8 - 61 in (203 - 1,549 mm) |
| Rotary Table Option Platter Size | 36 in (914 mm) |
| Rotary Table Option Max Speed | 12 rpm |
| Rotary Table Option Max Load | 10,000 lb (4,536 kg) |
| Rotary Table Option Positioning Accuracy | 12 arc seconds |
| Rotary Table Option Repeatability | 5 arc seconds |
| Rotary Table Option Spindle Center to Table Top | 0 - 53 in (0 - 1,346 mm) |
| Tool Capacity | 24 station arm type (40-60 tool) |
| Tool Change Time | 4 seconds |
| Max Tool Diameter (full magazine) | 5.90 in (150 mm) |
| Max Tool Diameter (adjacent pockets empty) | 9.85 in (250 mm) |
| Max Tool Weight | 33.0 lb (15.0 kg) |
| Max Tool Length | 16 in (406 mm) |
| Positioning Accuracy | +/- 0.0003 in (0.0076 mm) |
| Repeatability | +/- 0.0002 in (0.0051 mm) |
| Ballscrew Diameter | 1.96 in (50 mm) |
| Rapid Traverse Xyz | 750 ipm (19.1 m/min) X, Y, Z |
| Cutting Feed Rate | 0.001 - 600 ipm (up to 15.2 m/min) |
| Servo Type | AC Digital Brushless |
| Axis Thrust | 7,500 lb (3,402 kgf) |
| Air Requirement | 90 psi (6.2 bar), 5 cfm (142 L/min) |
| Coolant Capacity | 100 gal (379 L) |
| Coolant Flow | 5 gpm (19 L/min) |
| Power Requirement | 80 A at 480 VAC |
| Shipping Dimensions | 120 x 94 x 96 in (3,048 x 2,388 x 2,438 mm) |
| Machine Dimensions | 195 x 159 x 155 in (4,953 x 4,039 x 3,937 mm) |
| Machine Weight | 38,000 lb (17,237 kg) |
Specifications sourced from fryermachine.com — verified 2026-10-04
Strengths & Limitations
Strengths
- 4.330 in (110 mm) boring bar with 20 in (508 mm) of programmable W axis travel
- 360 ft-lb (488 Nm) at 350 rpm, and 1,400 ft-lb (1,898 Nm) with the optional 2-speed gearbox
- 50 in (1,270 mm) of Y travel over a 36 x 80 in (914 x 2,032 mm) table
- Coolant through the spindle is listed as standard
- 36" built-in or 60" x 48" rectangular rotary table options
Limitations
- Top spindle speed is 3,000 rpm
- Positioning accuracy is +/- 0.0003 in (0.0076 mm), against +/- 0.0002 in (0.0051 mm) on the HR-70
- Sag compensation for the W axis is an option
- Occupies 195 x 159 in (4,953 x 4,039 mm) and stands 155 in (3,937 mm) tall
Best For
Frequently Asked Questions
01
It is the travel of the boring bar. The bar is 4.330 in (110 mm) in diameter, carries a 50 taper and moves 20 in (508 mm) as a fully programmable W axis, in addition to 36 in (914 mm) of Z travel. An optional sag compensation function adjusts the Y axis position relative to the W axis position.
02
The HR-70 has a fixed spindle at 60 - 6,000 rpm with 306 ft-lb (415 Nm) and 55 in (1,397 mm) of Y. The HB-70 has a moving bar spindle at 30 - 3,000 rpm with 360 ft-lb (488 Nm), a 20 in (508 mm) W axis and 50 in (1,270 mm) of Y. Table size and table load are the same.
03
Spindle nose to table center ranges from 7 to 43 in (178 - 1,092 mm) and spindle center to table top from 8 to 61 in (203 - 1,549 mm). With the built-in rotary table option the spindle center to table top figure is 0 to 53 in (0 - 1,346 mm).
04
A 24 station arm type changer, with 40 and 60 tool versions available. Tools can be 5.90 in (150 mm) in diameter with the magazine full, 9.85 in (250 mm) with adjacent pockets empty, 16 in (406 mm) long and 33.0 lb. Tool change time is 4 seconds.
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