Sharp STC-50

Q: How much does the Sharp STC-50 cost?

The price estimate for the Sharp STC-50 is uncertain: we have no price for it that we can cite and no estimate we can stand behind, so we give no figure. Configuration, tooling, automation and installation move the final price substantially. A specific price can be requested at https://machinetoolindex.com/machines/sharp-stc-50#price; the request is passed to Sharp or an authorised dealer.

Specs verified 2026-10-04 · sharp-industries.com Updated 2026-10-04

Sharp STC series big bore CNC lathe (series photo shown on the STC-50 page)

Image: sharp-industries.com, Sharp

Key Specifications

Spindle Power

30 hp (STD Fanuc Alpha 22) Opt: 40 hp or 50 hp

Max Turn Length

STC-5080: 78.74 in (2,000 mm); STC-50120: 118.11 in (3,000 mm); STC-50160: 157.48 in (4,000 mm); STC-50200: 196.85 in (5,000 mm)

distance between centers

STC-5080: 78.74 in (2,000 mm); STC-50120: 118.11 in (3,000 mm); STC-50160: 157.48 in (4,000 mm); STC-50200: 196.85 in (5,000 mm)

max roll cutting diameter

43.31 in (1100 mm)

min roll cutting diameter

20.47 in (520 mm)

spindle bore

6 in (152 mm) 9 in (230 mm) 10 in (255 mm) 12 in (305 mm) 15 in (380 mm)

How much does the Sharp STC-50 cost?

Price estimate

Uncertain

We do not have a price for the Sharp STC-50 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

Sharp's STC-50 is the middle of the STC extra heavy duty big bore CNC lathe range, and its working size is best read from the roll rows: a maximum roll cutting diameter of 43.31 in (1100 mm) and a minimum of 20.47 in (520 mm). The swing row on Sharp's page prints an inch figure and a metric figure that do not agree, so treat the roll diameters as the dependable numbers and have the swing confirmed in writing.

A 20.47 in minimum tells you what kind of shop this is for. Paper, steel and rubber mill rolls, large hydraulic cylinder tubes and similar parts sit inside that window; ordinary shaft work does not.

Mass is the other defining feature. With 78.74 in (2,000 mm) between centers the machine weighs 37,400 lb (17,000 kg), and each longer bed adds to it: 41,900 lb (19,000 kg), 46,300 lb (21,000 kg) and 50,700 lb (23,000 kg) at 196.85 in (5,000 mm). All of that sits on a 49.21 in (1250 mm) bed whose ways are split between the cross slide and the tailstock.

Height is 92.9 in (2,360 mm). The axes use a 1.57 in (40 mm) ball screw on X and a 2.48 in (63 mm) one on Z, and the Z-axis servo steps from 5.3 hp on the two shorter beds to 9.3 hp on the two longer.

Full Specifications

Parameter	Value
Distance Between Centers	STC-5080: 78.74 in (2,000 mm); STC-50120: 118.11 in (3,000 mm); STC-50160: 157.48 in (4,000 mm); STC-50200: 196.85 in (5,000 mm)
Max Roll Cutting Diameter	43.31 in (1100 mm)
Min Roll Cutting Diameter	20.47 in (520 mm)
Max Turning Length	STC-5080: 78.74 in (2,000 mm); STC-50120: 118.11 in (3,000 mm); STC-50160: 157.48 in (4,000 mm); STC-50200: 196.85 in (5,000 mm)
Spindle Bore	6 in (152 mm) 9 in (230 mm) 10 in (255 mm) 12 in (305 mm) 15 in (380 mm)
CNC Control	FANUC Oi-TF
Bed Way Type	Multiple guides
Bed Width	49.21 in (1250 mm)
X Axis Travel	15.75 in (400 mm)
Z Axis Travel	STC-5080: 78.74 in (2,000 mm); STC-50120: 118.11 in (3,000 mm); STC-50160: 157.48 in (4,000 mm); STC-50200: 196.85 in (5,000 mm)
X Axis Ballscrew Diameter	1.57 in (40 mm)
Z Axis Ballscrew Diameter	2.48 in (63 mm)
Spindle Motor Power	30 hp (STD Fanuc Alpha 22) Opt: 40 hp or 50 hp
X Axis Motor	5.3 hp (Fanuc AC servo)
Z Axis Motor	STC-5080: 5.3 hp (Fanuc AC servo); STC-50120: 5.3 hp (Fanuc AC servo); STC-50160: 9.3 hp (Fanuc AC servo); STC-50200: 9.3 hp (Fanuc AC servo)
Hydraulic Pump Motor	2 hp (1.5 kW)
Coolant Pump Motor	1.7 hp (1.27 kW)
Machine Weight	STC-5080: 37,400 lb (17,000 kg); STC-50120: 41,900 lb (19,000 kg); STC-50160: 46,300 lb (21,000 kg); STC-50200: 50,700 lb (23,000 kg)
Machine Length	STC-5080: 242.1 in (6,150 mm); STC-50120: 281.5 in (7,150 mm); STC-50160: 320.9 in (8,150 mm); STC-50200: 360.2 in (9,150 mm)
Machine Height	92.9 in (2,360 mm)

Specifications sourced from sharp-industries.com — verified 2026-10-04

Strengths & Limitations

Strengths

Roll cutting diameters from 20.47 in (520 mm) to 43.31 in (1100 mm)
50,700 lb (23,000 kg) of machine in the longest version
Separate bedways for cross slide and tailstock on a 49.21 in (1250 mm) bed
Spindle bores listed from 6 in (152 mm) to 15 in (380 mm)
Spindle chiller offered as an option

Limitations

The swing row on Sharp's page is not consistent between inch and metric
Nothing under 20.47 in (520 mm) can be roll-turned in the listed setup
X-axis travel of 15.75 in (400 mm)
Height of 92.9 in (2,360 mm) and a foundation for up to 50,700 lb (23,000 kg)

Best For

Mill rolls from 20.47 in to 43.31 in diameter Large cylinder tubes and heavy pipe Roll regrind preparation and journal turning Parts up to 196.85 in (5,000 mm) between centers

Frequently Asked Questions

01 What diameter range does the STC-50 handle?

The roll cutting rows give 43.31 in (1100 mm) maximum and 20.47 in (520 mm) minimum. The STC-44 below it covers 12.60 in (320 mm) to 38.19 in (970 mm) and the STC-60 above it covers 28.35 in (720 mm) to 51.18 in (1300 mm), so the three overlap.

02 How heavy is the STC-50?

The STC-5080 weighs 37,400 lb (17,000 kg). The STC-50120 weighs 41,900 lb (19,000 kg). The STC-50160 weighs 46,300 lb (21,000 kg). The STC-50200 weighs 50,700 lb (23,000 kg). Lengths with chip conveyor run from 242.1 in (6,150 mm) to 360.2 in (9,150 mm).

03 What control and motors are on the STC-50?

A FANUC Oi-TF control, a 30 hp Fanuc Alpha 22 spindle motor with 40 hp or 50 hp optional, and Fanuc AC servos: 5.3 hp on X, and 5.3 hp or 9.3 hp on Z depending on bed length. The hydraulic pump motor is 2 hp (1.5 kW) and the coolant pump 1.7 hp (1.27 kW).

04 Can the STC-50 bore as well as turn?

Sharp lists a boring attachment for a bar diameter of 120mm as an optional accessory, and the hydraulic V-8 and V-12 turrets are supplied with three boring toolholders, one facing toolholder and a turret sleeve. With 15.75 in (400 mm) of X travel, check the reach against the bore you need.