Page 2 - Exlar - FT series high force roller screw actuator

FT Series Linear Actuators

FT Series

Linear Actuators

High Performance Engineered Compatibility
As with all Exlar roller screw products, the FT Series actuators Exlar has removed much of the end-user-engineering burden
deliver heavy load capacity, high speed capabilities, and by designing the FT series to be compatible with a wide variety
exceptionally long life when compared to other linear actuator of standard motors. Motor mounting, actuator mounting, and
technologies. gearing configurations are available to meet nearly any
application’s requirements.
Other comparably-sized screw actuator products on the
market, specifically ball screw and acme screw actuators, Exlar FT Series force tube actuators use a planetary roller
have relatively low load capacities, short working lives and screw mounted inside a telescoping tube mechanism. The
limited speed capabilities. At equivalent sizes, under moderate follower is attached to the moveable force tube, which then
to heavy loads, it is reasonable to project that FT units will extends and retracts as the screw rotates. An external motor
deliver up to 15 times the working life of those other methods. (supplied by Exlar or the customer) provides the rotational
For OEM designers, this often means much more power and force.
durability can be achieved from a much smaller footprint when
Exlar FT units are used.
Technical Characteristics
Contamination Protection Frame Sizes - in (mm) 3.5 (90), 4.8 (120), 6.0 (150), 8.0 (200)
The FT Series design has all the contamination-isolation Screw Leads - in (mm) 0.2 (5), 0.25 (6), 0.4 (10), 0.5 (12),
advantages of hydraulic cylinders without the limited load, life, 0.8 (20), 1.2 (30)
and speed of designs built around ball or acme screws. The Standard Stroke Lengths 6 (150)*, 12 (300), 18 (450), 24 (600),
bearing and roller screw components in the Exlar FT Series in (mm) 36 (900), 48 (1200) FT Series
force tubes are mounted within the sealed housing. This Force Range up to 40,000 lbf (178 kN)
prevents abrasive particles and other contaminants from Maximum Speed up to 60 in/sec (1524 mm/s)
entering the actuator’s critical mechanisms, and assures *Not on FT60 or FT80
trouble-free operation even in the most severe environments.

FT Series actuators are provided with standard grease Operating Conditions and Usage
lubrication. Custom provisions can be made for oil filled Accuracy:
lubrication. Screw Lead Accuracy in/ft
(mm/300 0.001 (0.025)
mm)
Screw Lead Variation in (mm) 0.0012 (0.030)
Actuator Backlash* in (mm) 0.002 (0.06)
Friction Torque Values lbf-in (Nm) FT35: 7.0 (0.79)
Feature Standard Optional FT45: 11.00 (1.24)
FT60: 14.0 (1.58)
Long Strokes 6 inch, 12 inch, 18 inch, 24 inch, Intermediate Lengths FT80: 35.0 (3.95)
36 inch, and 48 inch
up to 96 inch
Efficiency:
Pre-Loaded Motor Inline % 80
Follower No Yes
Motor Parallel % 80
External Limit No One, Two or Three Ambient Conditions:
Switches Adjustable Switches
Standard Ambient Temperature °C 0 to 65
Side Mount, Side Lug,
Multiple Extended Tie Rods, Rear Clevis, Extended Ambient Temperature*** °C -30 to 65
Actuator Front Flange, Side Trunnion, Specials Available Storage Temperature °C -40 to 85
Mountings
Rear Flange, Front/Rear Flange IP Rating** IP65
Multiple Motor Inline Direct Drive, * System backlash will be different with various types of motor mounting
Mounting Parallel 1:1 Drive, Specials Available arrangements and couplings. Please discuss your particular configuration with your
Configurations Parallel, 2:1 Reduction local sales representative.
** For IP65S sealing of unit with motor mounted, please contact your local sales
representative.
*** Consult Exlar for extended temperature operation.

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