CNC LATHE USC 850
High-precision complete-machining for demanding turned parts
Custom-made solutions for your production EMAG offers three machine series that are perfectly tailored to a wide range of manufacturing requirements: Classic, Modular and Customized. From economical entry-level solutions to highly specialized systems, EMAG can help you find the optimal solution for your production.
TURNKEY EXCELLENCE Complete solutions for all series EMAG offers comprehensive turnkey solutions for all machines. From the initial process design to successful production implementation, you benefit from the decades of experience of EMAG‘s experts. The range of services includes:
process and tool design ✓ Detailed for optimized machining strategies
cycle time calculation with the ✓ Precision latest simulation software
project support ✓ Comprehensive from a single source
service and spare ✓ Worldwide parts supply
With EMAG, you not only get a machine, but a well-thought-out manufacturing solution that is precisely tailored to your requirements and your budget.
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COMPLETE SOLUTIONS for all series
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Classic MACHINES
The efficient entry into precision manufacturing Classic machines combine maximum efficiency with the high quality you expect from EMAG. These machines focus on the essentials and offer an optimized range of functions for typical machining requirements. The base machine is purchased from selected partners and equipped by EMAG with proven process and machining technology, such as chucks and tools. You benefit from EMAG‘s worldwide service network and fast spare parts supply – the ideal choice for cost-efficient production without compromising on reliability.
system availability ✓ Reliable and production times
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Modular MACHINES
CNC lathe USC 850 | Customized solutions for your production
OUR SERIES
Customized flexibility The modular machines, such as the VL series, expand the range to include flexible manufacturing solutions. These machines and system solutions are characterized by a modular design and can be adapted to your specific requirements using a wide range of options. They combine high productivity with outstanding adaptability – ideal for companies with more specific requirements.
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Customized MACHINES
Maximum individuality The customized machines, which include the VLC and VSC series, for example, represent tailor-made cutting-edge technology. Each machine is designed exactly according to customer requirements and is particularly suitable for highly complex processes that require maximum precision and specialization. These solutions offer the greatest possible flexibility for implementing individual production concepts.
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Precision meets the highest productivity levels in the machining of large turned parts The USC 850 CNC turning center is a high-performance machine designed specifically for machining large and complex turned parts. With its 3-axis machining (X/Z/C) it is ideal for the production of rotationally symmetrical precision parts in demanding industries such as automotive, aerospace and general engineering. The USC 850 not only offers exceptional precision, but also high productivity and reliability, making it an economical solution for the production of high-quality components.
KEY FEATURES AT A GLANCE Maximum swing diameter
mm
800
Maximum turning diameter
mm
700
Turning diameter between centers
mm
575
Maximum turning length
mm
2,000
Workpiece weight, max.
kg
600
mm
132
Spindle passage
4
Machine structure
The USC 850 is designed with a 45° inclined bed, which, in combination with a massive base, ensures exceptionally high static and dynamic rigidity. This design minimizes vibrations during machining and provides excellent damping, resulting in consistently high manufacturing quality.
ADVANTAGES + Solid cast iron machine base + Exceptional static and dynamic rigidity + Optimum vibration damping + Long-term stability of manufacturing precision
X-axis
Z-axis Roller recirculation guides guarantee long-lasting precision in axis movement and optimal force absorption.
CNC lathe USC 850 | Precision meets the highest productivity levels in the machining of large turned parts
Inclined-bed design
The 45° slant bed made of high-quality cast iron off ers high static and dynamic rigidity.
High-quality materials The bed, carriage and supports of the machine are made of high-quality cast iron and have been subjected to stress-relieving treatments. This not only ensures high stability, but also excellent damping, which minimizes deformation-related manufacturing deviations. The generously dimensioned roller recirculation guides ensure precision and low-wear guidance of the moving machine parts.
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Machine structure 1
Accuracy and productivity
3 4
High cutting performance For high cutting performance, main spindles with up to 30 kW (37 kW for 30 min) with over 1900 Nm and spindle connection A2-15 are available as an option.
Rapid traverse speeds The machine achieves rapid traverse speeds of 15 m/min in the X/Z direction, which shortens machining times and increases productivity. The centralized lubrication of all guides and ball screws maximizes the availability and service life of the components.
1 MAIN SPINDLE Power Speed range
» Maximum swing diameter: 800 mm » Maximum turning diameter: 700 mm » Maximum turning length: 2,000 mm » Maximum workpiece weight: 600 kg (with support by tailstock)
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2,000 min-¹
Spindle bearing
Cylindrical roller bearings for high rigidity and concentricity
Spindle passage
132 mm
Concentricity
Large work area
22 kW continuous operation (30 kW for 30 min.)
in the µm range
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CNC lathe USC 850 | Machine structure
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3 C-AXIS
4 HYDRAULIC STEADY REST
5 TAILSTOCK
2 TURRET Motor speeds for driven tools
up to 3,000 min-¹
Power-driven tools
5 kW
Recording
internal feed to the cutting edge for optimized tool life
Quill diameter
150 mm
Quill stroke
200 mm
Mounting
MT 5
Turning diameter: 575 mm
Coolant supply
BMT 75
Hydraulic tailstock
Maximum turning length: 2,000 mm
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Machine structure 1
SPINDLE UNIT
The main spindle combines power with precision: + 22 kW continuous power (30 kW for 30 min)
+ Speed range: 50-2,000 rpm + Spindle passage: 132 mm + A2-11 mount + Runout accuracy in the μm range + Optimized belt transmission for maximum torque
Precision bearing The spindle bearing consists of cylindrical roller bearings. This bearing combination offers high rigidity and precise concentricity, even at maximum load. The spindle has a 132 mm through-hole and an A2-11 mount, which allows for flexible mounting of various workpieces. A spindle with a through hole of 184 mm and an A2-15 mount is available as an option.
Powerful drive The main spindle of the USC 850 is driven by a belt gearbox with optional two-stage transmission. A powerful servomotor with 22 kW continuous power (30 kW for 30 minutes) efficiently transfers the torque to the spindle. This drive design ensures optimal torque values in the lower and upper speed ranges.
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Continuous rating 30 min. rating
MAIN SPINDLE
High speed range
7 Nm
8
4
Nm
T=5 3
12
T=3 94
Power (kW)
3 Nm
16
Spindle speed (rpm)
1750 1777 2000
1250 1333 1500
1000
500 533 750
500 533 600 666 700
400
200 255 300
100
4 250
8
Nm
12
24 22 20
23
16
T=1.1 2
24 22 20
TAILSTOCK
The robust design of the USC 850 tailstock provides reliable workpiece support. The quill, with a diameter of 150 mm and a stroke of 200 mm, is hydraulically operated and has a MK 5 live center.
32 30 28
T=8
Power (kW)
Low speed range 32 30 28
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CNC lathe USC 850 | Machine structure
Power-speed diagram
Spindle speed (rpm)
THE POWERFUL MAIN SPINDLE Power (kW)
Powerful torque diagram 40 36 32
3
1
4
2
1 Gear ratio 1:1 30 min. rating Max Torque=614 Nm
28
2 Gear ratio 1:1 Continuous rating Max Torque=498 Nm
24 20
3 Gear ratio 1:4 30 min. rating Max Torque=2454 Nm
16 12 8
1750
2000
1500
1250
1000
144 250 438 500 575 750
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4 Gear ratio 1:4 Continuous rating Max Torque=1989 Nm
Spindle speed (rpm)
Easy operation The tailstock can be operated either via the CNC program or via a foot switch for quick manual setup. The hydraulic pressures can be adjusted via easily accessible controls and are displayed. This allows the clamping forces to be optimally adjusted to different workpiece materials and geometries.
3 HYDRAULIC STEADY REST The machine can be equipped with a hydraulic steady rest for long or thin-walled workpieces. This enables clamping ranges from 30 to 245 mm (alternative from 45 to 310 mm) in diameter and ensures secure support even with critical workpiece geometries.
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Machine structure 4 TURRET Flexibility and versatility The BMT 75 turret with 12 stations enables flexible complete machining of complex workpieces. All stations can be equipped with powered tools and can accommodate turning tools.
High motor speeds and drive power The driven tools can reach motor speeds of up to 3,000 rpm with a drive power of 5 kW. This makes it possible to perform milling, drilling, and threading operations with a high degree of precision and efficiency.
Optimal cooling system The coolant supply is routed internally through the turret, ensuring an optimal cooling system directly at the cutting edge. This increases tool life and improves the surface quality of the machined workpieces.
Robust construction The turret‘s robust design and precision indexing enable both heavy rough-machining and finishing with high dimensional accuracy. A hydraulic clamping system ensures exact positioning even under high cutting forces.
BMT 75 TURRET The 12-station turret can be equipped with powered tools:
+ Motor speeds of driven tools: up to 3,000 rpm + Power of driven tools: 5.0 kW + Shank: BMT 75 + Coolant supply: internal supply to the cutting edge for optimized tool life
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A chip conveyor ensures automatic chip disposal, which increases operating efficiency and reduces maintenance. The integrated overload protection ensures trouble-free operation and protects the machine from damage caused by overloading.
CNC lathe USC 850 | Machine structure
AUTOMATIC CHIP DISPOSAL
CONTROL FANUC 0i-TF(1) control The USC 850 is equipped with the FANUC 0i-TF(1) control system, which offers all the functions required for complex multi-axis machining. The electrical components are housed in an integrated electrical cabinet (IP 54).
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Technical data
USC 850
Work area
Main spindle
Maximum swing diameter
mm
800
Maximum turning length
mm
2,000
Maximum turning diameter (between centers)
mm
700 (575)
Diameter of the chuck
mm
400
Spindle nose Type
DIN ISO 702-1
A2-11
Specification of the taper bore of the spindle
metric system
1:20
Diameter of the spindle through-hole
mm
132
Spindle speed
rpm
50 – 2,000
Spindle power (continuous/30 minutes)
kw
22/30
Quill diameter / stroke
mm
150/200
Live taper mount
MT
5
X-axis/Z-axis travel
mm
380/2,200
X-axis/Z-axis speed
m/min
15
Tailstock
Turret slide
in
in in in
in
in
in
Number of tool positions Turret
Other
12
31.5
79
27.5 (22.5)
16
5
6/8
15/86.5
12
Tool receptor
BMT 75
Motor speeds of rotating tool
rpm
30-3,000
Motor power of rotating tool
Kw
5
Power supply specifications
50Hz 380V±10%, three-phase AC
Machine size L×W×H (without chip conveyor)
mm
6,155 x 2,600 x 2,450
Machine weight
kg
12,000
Maximum workpiece weight (both ends loaded)
kg
600
in
242 × 102 × 97
*All dimensions in mm
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TECHNOLOGY. CONNECTED. Turning Chucked Components
Gear Grinding
Turning Shafts
Cylindrical Grinding
Out-of-round Gr
Milling
rinding
Gear Hobbing
ECM/PECM
Laser Processing
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351-1-GB/02.2026· Printed in Germany · © Copyright EMAG · Subject to technical changes.
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