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Miniature Lead Screws

Miniature Lead Screws

With diameters as small as two millimeters and optional anti-backlash nuts, Thomson miniature lead screws enable designers to achieve small-scale designs once considered impossible. Configurable, customizable and lean, these lead screws help reduce the size and weight of applications without compromising precision, life or function.

產品介紹

Miniature Lead Screw Configurations
Diameters	2 to 4 mm
Leads	0.375 to 8 mm
Lengths	Up to 150 mm
Drive End	Integrated Coupler Oversized Journal Standard Journal Faced End
Lead Nuts	Flange Mount, Standard Backlash Flange Mount, Anti-Backlash Threaded Mount, Standard Backlash Compact Thread Mount, Standard Backlash
Support End	Faced End Bearing Journal

Basic Specifications
Lead Screw	2mm	3mm	4mm
Major diameter [mm]	2	3	4
Lead accuracy [mm/mm (in/in)]	0.0005 (0.0005)
Straightness [mm (in)]	0.05 (0.002)
Thread direction	right hand
Max. screw length [mm (in)]	150 (5.9)
Max. speed [RPM]	1000
Max. iput torque integrated coupler [N-m (oz-in)]	1.1 (150)
Material	stainless steel
Weight [mg/mm (oz/in)]	26 (0.02)	40 (0.04)	70 (0.06)

Lead Nut	2mm	3mm	4mm
Drag torque for standard nut [mN-m (oz-in)]	free wheeling
Drag torque for anti-backlash nut [mN-m (oz-in)]	3.5 (0.5)
Dynamic load capacity for standard nut [N (lbf)]	8.9 (2)	22.2 (5)	44.5 (10)
Dynamic load capacity for anti-backlash nut [N (lbf)]	4.4 (1)	11.1 (2.5)	22.2 (5)
Min. life for standard nut [revs]	200 million
Min. life for anti-backlash nut [revs]	100 million
Max. temperature [°C (°F)]	82 (180)
Coefficient of friction	0.12-0.16
Efficiency %	37 - 79
Max. axial backlash for standard nut [mm (in)]	0.058 (0.0023)	0.058 (0.0023)	0.064 (0.0025)
Max. axial backlash for anti-backlash nut [mm (in)]	0
Positional repeatability for standard nut [mm (in)]	0.013 - 0.058 (0.0005 - 0.0023)	0.013 - 0.058 (0.0005 - 0.0023)	0.013 - 0.064 (0.0005 - 0.0025)
Positional repeatability for anti-backlash nut [mm (in)]	< 0.013 (0.0005)
Material	bearing grade PEEK

Product Availability
Diameter [mm]	Lead [mm]
Diameter [mm]	0.375	0.5	0.75	1	1.5	3	4	6	8
2	?		?		?	?
3		?		?		?		?
4				?			?		?

For all other lead screw availability, please see standard lead screw catalog. For any custom diameter and/or leads, please contact Thomson customer support for more information.

Miniature Lead Screw Highlights:

Diameters as small as 2 mm
Optional anti-backlash design
Customizable end machining, special coatings, unique nut design, end configurations
Patent-pending integrated coupler for easy mounting

Miniature Lead Screw Applications:

Handheld medical devices
Miniature XY linear stages
Micro grippers

手冊

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