RACO LM  Linear Drive (Rod-less Electric Actuator) Basic Module 
 

This basic building block allows us to create complex motion systems. It is an ideal module for system integrators or machine builders using their own, selected motors, drives and accessories.
 

The LM module is available in two sizes, the LM3 and the LM4:
 
 Main Dimensions 

 
 

LM3

LM4

Repeatability +/-0.003"
Temperature Range -5 to+185 F
Coefficient of Friction 0.009 0.02
Efficiency 95%
Materials
Structure 6063 Aluminum Alloy
Belt Polyurethane / steel reinforced
Wheel Treads Delrin 150 SA
Link shaft Solid or Tubular
Weights
LM Modules - Complete    
Un-driven Idler      N type 6.82 lb +0.317 lb / in 12.0 lb +0.6 lb / in
                         L type 9.42 lb +0.317 lb / in 16.88 lb +0.6 lb / in
                         X type 13.2 lb +0.137 lb / in 23.5 lb + 0.6 lb / in
Single LM drive      
                         N type 7.41 lb + 0.325 lb / in 14.1 lb + 0.617 lb / in
                         L type  9.01 lb + 0.325 lb / in 16.8 lb + 0.617 lb / in
                         X type 11.41 lb + 0.325 lb / in 25.4 lb + 0.617 lb / in
Moving Beam        Z Drive  17.40 lb + 0.325 lb / in 28.7 lb + 0.617 lb / in
Subcomponents    
Link Shaft assembly

 4.32 lb + 0.125 lb / in 

Belt  0.09 lb / ft  0.128 lb / ft
Profile 0.137 lb / in  0.6 lb /  in
Profile Tolerances
Flatness 0.012" 0.016"
Straightness

0.0125" per  ft

Twist 

0.25 degree per ft 

Max. Stroke single extrusion  (1" allowance for switches) 

                          N type

238" 236"
                          L type 235" 233"
                          X type 230" 228"
                          Z Drive 36" 48"
Drive Pitch

7.48 in / rev

10.232 in / rev

Pulley Diameter 2.38" 3.258"
Traction Force Limits 562 lb 843 lb

Download LM brochure
PDF  file - 1100 KB