SMC Corporation of America
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The LEF series slider type electric actuator features a low profile height of 46mm *. The actuators main body can be mounted without removing any exterior components, such as the cover, making installation easy. The standard equipped seal band covers the guide, ball screw and belt, preventing grease and external foreign matter from splashing and entering the LEF. There are 2 types of drivers

The rodless LEFS slider is an electric actuator with a load mounting platform situated above a ball screw drive.  A flexible seal band permits platform travel while preventing foreign matter from entering the drive.  Slider advantages include a low profile height, shorter length than a rod with equivalent stroke, and better positioning repeatability than a belt driven slider.  This version

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Motorless Type Electric Actuator/Slider Type Ball Screw Drive LEFS Series LEFS25, 32, 40 How to Order LEFS 100 A 25 q e y NZ w r t H R q Accuracy r Motor type e Motor mounting position y Stroke [mm] t Lead [mm] Nil Basic type H High precision type 50 50 to to 1200 1200 Nil In-line R Right side parallel L Left side parallel Symbol LEFS25 LEFS32 LEFS40 H 20 24 30 A 12 16 20 B 6 8 10 Symbol

New New Electric Actuator Slider Type RoHS Step Motor (Servo/24 VDC) T Servo Motor (24 VDC) Type Ball Screw Drive Series LEFS Size: 16, 25, 32, 40 Max. work load: 60 kg Positioning repeatability: o0.02 mm Clean room specification also available Clean room specification 11-LEFS Belt Drive Series LEFB Size: 16, 25, 32 Size: 16 25 32 Max. stroke: 2,000 mm Max. speed: 2,000 mm/s AC Servo Motor

Series: LEFS (Ball Screw Drive), Accuracy: H (High Precision Type), Size: 32, Motor Mounting Position: R (Right Side Parallel), Motor Type: NM1 (Mounting Type M1), Lead Screw: A (LEFS25, 12mm; LEFS32, 16mm; LEFS40, 20mm), Stroke: 550mm, Auto Switch Mounting Bracket: C [With 1 pc. (Included)], Seal Band Stopper: N [Roller Type Seal Band Stopper (Grease Free)]

Series: LEFS (Ball Screw Drive), Accuracy: H (High Precision Type), Size: 32, Motor Mounting Position: R (Right Side Parallel), Motor Type: NM2 (Mounting Type M2), Lead Screw: A (LEFS25, 12mm; LEFS32, 16mm; LEFS40, 20mm), Stroke: 550mm, Auto Switch Mounting Bracket: C [With 1 pc. (Included)], Seal Band Stopper: N [Roller Type Seal Band Stopper (Grease Free)]

Series: LEFS (Ball Screw Drive), Accuracy: H (High Precision Type), Size: 40, Motor Mounting Position: R (Right Side Parallel), Motor: Step Motor (Servo 24 VDC), Lead Screw: A (Size 16: 10mm, Size 25: 12mm, Size 32: 16mm, Size 40: 20mm), Stroke: 550mm, Motor Option: w/o Lock, Auto Switch Mounting Bracket: C (w/1 pc, Included), Grease Application: N (w/o, Roller Specification)

Series: Ball Screw Drive, Accuracy: High Precision Type, Size: 40, Motor Mounting Position: Right Side Parallel, Motor: Step Motor (Servo 24 VDC), Lead Screw: Size 16: 10mm, Size 25: 12mm, Size 32: 16mm, Size 40: 20mm, Stroke: 550mm, Motor Option: w/o Lock, Auto Switch Mounting Bracket: w/1 pc, Included, Grease Application: w/o, Roller Specification, Positioning Pin Hole: -, Actuator Cable

Series: Ball Screw Drive, Accuracy: High Precision Type, Size: 32, Motor Mounting Position: Right Side Parallel, Motor Type: Mounting Type M1, Lead Screw: LEFS25, 12mm; LEFS32, 16mm; LEFS40, 20mm, Stroke: 550mm, Auto Switch Mounting Bracket: C [With 1 pc. (Included)], Seal Band Stopper: N [Roller Type Seal Band Stopper (Grease Free)], Positioning Pin Hole: -

Series: Ball Screw Drive, Accuracy: High Precision Type, Size: 32, Motor Mounting Position: Right Side Parallel, Motor Type: Mounting Type M2, Lead Screw: LEFS25, 12mm; LEFS32, 16mm; LEFS40, 20mm, Stroke: 550mm, Auto Switch Mounting Bracket: C [With 1 pc. (Included)], Seal Band Stopper: N [Roller Type Seal Band Stopper (Grease Free)], Positioning Pin Hole: -

Series: LEFS, Accuracy: H (High-precision Type), Size: 40, Motor Mounting Position: R (Right Side Parallel), Motor Type: E (Battery-less absolute, 24VDC, Step), Lead: A (Size 16: 10mm, Size 25: 12mm, Size 32: 16mm, Size 40: 20mm), Stroke: 500mm, Motor Option: w/o Option, Auto Switch Compatibility: C (with Includes 1 Mounting Bracket), Grease Application: N (w/o, Roller Specification)

Series: LEFS, Accuracy: H (High-precision Type), Size: 40, Motor Mounting Position: R (Right Side Parallel), Motor Type: E (Battery-less absolute, 24VDC, Step), Lead: A (Size 16: 10mm, Size 25: 12mm, Size 32: 16mm, Size 40: 20mm), Stroke: 350mm

Series: LEFS, Accuracy: High-precision Type, Size: 40, Motor Mounting Position: Right Side Parallel, Motor Type: Battery-less absolute, 24VDC, Step, Lead: Size 16: 10mm, Size 25: 12mm, Size 32: 16mm, Size 40: 20mm, Stroke: 500mm, Motor Option: w/o Option, Auto Switch Compatibility: with Includes 1 Mounting Bracket, Grease Application: w/o, Roller Specification, Positioning Pin Hole: -, Actuator