TH

ST-28

The ST-28 turning center combines the heavy-duty A2-8 spindle head of our
mid-size ST-35 big-bore lathe with the compact footprint of our smaller
ST-25 to create a powerful turning center that provides heavy-duty cutting
capability, without taking up a lot of valuable shop floorspace.

Powerful turning capability in a compact footprint
A2-8 spindle nose with 12" (305 mm) chuck
40 hp (29.8 kW) vector drive spindle
4.0" (102 mm) bar capacity
12-station BOT turret
Available Auto Door
WiFi standard
Ideal for high-volume, high-production environments
Made in the USA

Capacities

Chuck Size
: 305 mm
Max Part Swing
: 533 mm
Max Cutting Diameter (with BOT turret)
: 330 mm
Max Cutting Diameter (with BMT65 turret)
: 298 mm
Max Cutting Length (varies with workholding)
: 572 mm
Bar Capacity
: 102 mm

Travels

X Axis
: 239 mm
Z Axis
: 572 mm

Feedrates

Rapids on X
: 24.0 m/min
Rapids on Z
: 24.0 m/min

Axis Motors

Max Thrust X
: 18238 N
Max Thrust Z
: 22686 N

Spindle

Spindle Nose
: A2-8
Max Rating
: 29.8 kW
Max Speed
: 3200 rpm
Max Torque
: 576.0 Nm @ 325 rpm
Spindle Bore ø
: 117.3 mm

Turret

Number of Tools
: 12-Station BOT
OD vs ID Tools
: Any Combination (will vary with turret)
Boring Bar Rear Clearance (from back of turret )
: 102.0 mm

General

Coolant Capacity
: 208 L

Air Requirements

Air Required
: 113 L/min @ 6.9 bar
Inline Air Hose
: 3/8 in
Coupler (Air)
: 3/8 in
Air Pressure Min
: 5.5 bar

Electrical Specification

Spindle Speed
: 3200 rpm
Drive System
: Direct Speed, Belt Drive
Spindle Power
: 29.8 kW
Input AC Voltage (3 Phase) - Low
: 220 VAC
Full Load Amps (3 Phase) - Low
: 70 A
Input AC Voltage (3 Phase) - High*
: 440 VAC
Full Load Amps (3 Phase) - High*
: 35 A

Dimensions - Shipping

Domestic Pallet
: 363 cm x 229 cm x 234 cm
Export Pallet
: 364 cm x 229 cm x 234 cm
Weight
: 4645.0 kg
Domestic Pallet w/Conveyor
: 363 cm x 229 cm x 234 cm
Export Pallet w/Conveyor
: 363 cm x 229 cm x 234 cm