Linear Motion Components

Sealed Linear Stage (SLS)

When manufacturing debris, particulate or liquid contaminants work their way into a linear stage, they can abrade or gum up the drive mechanism and bearings. Loss of precision and shortened lifecycle follow. Our new SLS Sealed Linear Stage keeps contamination in its proper place — outside the stage housing.

Integrated Polyurethane Seal. The SLS features a proprietary linear lip seal design that integrates seamlessly with the stage’s anodized aluminium housing. Made from a ruggedized polyurethane elastomer, the seal is:

•Resistant to chemicals, temperature extremes and wear.

•Field replaceable in minutes without the disassembling the stage — or even removing the payload in most cases.

True Positioning. Available with both linear motor and ballscrew drives, SLS is a precision positioning device at heart.

•Linear motor configurations can achieve accuracies of ± 4 µm per meter of travel and bi-directional repeatability of ± 2 µm.

•Ballscrew configurations can achieve accuracies of ± 10 µm per meter of travel and bi-directional repeatability of ± 5 µm.

Compact, Fast and Strong. Self-contained in a housing that’s 185 mm wide and just 80 mm tall, SLS packs a lot of capabilities into a small package.

•Available with standard travel lengths from 100 to 1,000 mm and custom lengths to 2,000 mm.

•Speeds to 4 m/sec for linear motor drives and 0.4 m/sec for ballscrew drives.

•Continuous linear force to 300 N for linear motor drives and 1,540 N for ballscrew drives.

Demanding Applications. With its anodized housing and urethane seals, SLS targets applications with harsh operating environments including laser machining, welding, semiconductor and machining.

Downloads

TECHNICAL SPECIFICATIONS		Sealed Linear Axis, Medium
		SLS-LM	SLS-B
Type		Direct Drive Linear	Ballscrew Drive Linear
Bearing type		Preloaded 4-row ricirculating ball (4)
Maximum travel length (mm)		2,000
Motor type		Iron Core or Ironless Core	3-phase brushless servo
Lead		N/A	5 mm, 10 mm
Accuracy (µm)Linear accuracy at stage centerline, after two point temperature scale correction.	Standard	±4 µm per meter	±2 µm per 50 mm of travel
	w/error correctionController dependent.	±1.0 µm	1.5 µm per meter Requires linear encoder.
Bi-directional repeatability (µm)		±0.5µm	±1.0µm
Pitch, Roll & Yaw (arc-sec)		±2 µm/25 mm NTE ±12 µm at 1000 mm
Encoder type and resolutions		Linear Encoder 1 µm, 0.5 µm, 0.1 µm	Rotary Encoder 16KCPR Linear Encoder 1 µm, 0.5 µm, 0.1 µm
Maximum Dynamic Payload¹ (kg) Recommend maximum payload for standard SLS configurations. Contact Bell-Everman engineering for payload maximum with third-party amplifiers.		100
Speed (m/sec)		4	0.2, 0.4
Continuous Linear Force (N) Actual continuous force depends on motor and drive selection.		200, 300 (Iron Core) 87, 116 (Ironless Core)	475 - 1,540
Max Load for 10⁶m bearing life at 2 m/sec (N)¹		1,700
Max Load for 10⁶m bearing life at 0.5 m/sec (N)¹		6,600
Max Cantilever Load for 10⁶m bearing life at 2 m/sec (N-m)¹		90
Max Cantilever Load for 10⁶m bearing life at 0.5 m/sec (N-m)¹		360
Moving mass (kg)		Ironless Core: 2.0, 2.1 Iron Core: 3.5, 4.0	1.7
Friction With/Without Seals, N		20/7

Sealed Linear Stage (SLS)

Sealed Linear Stage (SLS)

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