Helac Corporation
Rotary Actuators for OEMs
Rotary Actuators Overview
Quick Reference Guide
L Series Load Bear
T Series Torq Bear
Custom Designs
Model Nomenclature
Application Stories
Customer Application Questionnaire

Model Nomenclature

L 10 1.7 E RF 180 / 120 S1 V H
 1   2     3     4     5     6     7     8     9    10

 1   Line
L Load Bear Line (Designed primarily for load bearing applications)
T Torque Bear Line (Designed primarily for torque only applications)
 2 Actuator Series
L Series Load Bear
10 Ultra Compact Design
20 Economical, Light Weight Design
30 Designed for Heavy Duty Applications
T Series Torque Bear
20 Keyed or Splined Shafts
 3 Torque Output (Approximate in lbs x 1000)
L10 Series: 1.7, 3.0, 5.5, 9.5, 15, 25
L20 Series: 4.5, 8.2, 15
L30 Series: 17, 25, 42, 65, 95, 125, 165, 215, 380, 740
T20 Series: 25, 45, 60
 4 Dimensional System
E English
M Metric System
S Special Custom Design
 5 Housing Configurations*
FF Front Flange
FT Foot Mount
RF Rear Flange
RL Rail Mount
 6 Standard Rotations*
180 180 degrees
185 185 degrees (L10-9.5 Only)
200 200 degrees (T20-60 Only)
220 220 degrees (T20-25 and T20-45 Only)
360 360 degrees
 7 Special Rotations
(Standard design with internal stop tube to limit rotation – indicates final rotation)
 8 Shaft Configuration*
L Series Load Bear
S1/SF Cantilever Mounted Shaft Option/Small Flange
S2 Straddle Mounted Shaft Option
T Series Torque Bear
DS Double Splined Extension
DP Double Plain Extension
DA Double Adapters
SS Single Splined Extension
SP Single Plain Extension
SA Single Adapters
 9 Valve Options
C With Counterbalance Valve
M Motion Control Valve*
V Valve Flat Machined on Housing*
O Without Counterbalance Valve
10 Seals
H Standard Seals & Bearings
S Special Seals & Bearings

* Currently not available on all models