FASTECH

Basic Specifications for FASTECH Linear Systems

Unless otherwise noted, all reference to lead screws in this catalog have the following characteristics:

Lead Screw Material	303 Stainless precision cold rolled steel
Screw Coating	Tefion coating is optional
Standard screw accuracy(Lead accuracy)	0.0006 in/inch
Screw repeatability	±0.006 inch
System repeatability(Motor and Screw)	Nominally the same as screw repeatability, motor variance adds ± 6 micro steps.
Screw straightness	.003 in/footm, measured as Total Indicated Runout (TIR) All screws are carefully checked for straightness before shipment.
Screw Efficiency	From 35% to 85% dependent on lead Also depends on the usage of an anti-backlash nut with screw. The larger the lead, the higher the efficiency of the screw.
Operating temperature	0°C ~ 93˚C(32˚F ~ 200˚F)
Screw backlash	Depends on lead (nominally ±0.005 inch)
System backlash	Includes screw, motor and attached mechanics. This will be the sum of all the backlash in your motion axis.
Nut Material	Polyacetal with lubricating additive Standard is a free-wheeling nut. [Anti-backlash version is available]
Wear life of screw and nut	Depends on load, speed, duty cycle and environmental factors [typically>5 million cycles]

※ Note : Fastech linear systems are manufactured from high quality materials.
Because of the variable effects of friction, lubrication and cleanliness, an exact life cannot be predicted for a given application.

Motor Lead Screw Code Structure

Lead Code	1.8° Motor Step Length	Motor Size
		Size 8	Size 11	Size 14		Size 17		Size 23		Size 34
		Screw Diameter
		3.5(0.138˝)	4.775(0.188˝)	5.56(0.218˝)	6.35(0.25˝)		6.35(0.25˝)	8(0.315˝)	9.525(0.375˝)	15.875(0.625˝)
AF	0.0015(0.00006˝)	0.30(0.012˝)
AA	0.003048(0.00012˝)	0.6096(0.024˝)			0.6096(0.024˝)		0.6096(0.024˝)
A	0.003175(0.000125˝)		0.635(0.025˝)						0.635(0.025˝)
AD					1(0.039˝)		1(0.039˝)
B	0.006096(0.00024˝)	1.2192(0.048˝)			1.2192(0.048˝)		1.2192(0.048˝)
D	0.00635(0.00025˝)		1.27(0.05˝)		1.27(0.05˝)		1.27(0.05˝)		1.27(0.05˝)
F	0.0079375(0.0003125˝)				1.5875(0.0625˝)		1.5875(0.0625˝)		1.5875(0.0625˝)
G	0.01(0.000395˝)	2.0(0.079˝)						2.0(0.079˝)
H	0.010541(0.000415˝)								2.1082(0.083˝)
J	0.012192(0.00048˝)				2.4384(0.096˝)		2.4384(0.096˝)
K	0.0127(0.0005˝)		2.54(0.1˝)		2.54(0.1˝)		2.54(0.1˝)		2.54(0.1˝)	2.54(0.1˝)
L	0.015875(0.000625˝)								3.175(0.125˝)	3.175(0.125˝)
M	0.02(0.00079˝)	4.0(0.158˝)						4.0(0.158˝)
P	0.021209(0.000835˝)								4.2418(0.167˝)
Q	0.024384(0.00096˝)				4.8768(0.192˝)		4.8768(0.192˝)
AQ				4.8768(0.192˝)
R	0.0254(0.001˝)		5.08(0.2˝)						5.08(0.2˝)	5.08(0.2˝)
S	0.03175(0.00125˝)				6.35(0.25˝)		6.35(0.25˝)		6.35(0.25˝)	6.35(0.25˝)
T	0.04(0.001575˝)	8.0(0.315˝)						8.0(0.315˝)
U	0.042291(0.001665˝)				8.382(0.33˝)		8.382(0.33˝)
V	0.047625(0.001875˝)								9.525(0.375˝)
W	0.048768(0.00192˝)				9.7536(0.384˝)		9.7536(0.384˝)		9.7536(0.384˝)
X	0.0508(0.002˝)		10.16(0.4˝)						10.16(0.4˝)
Y	0.0635(0.0025˝)				12.7(0.5˝)		12.7(0.5˝)		12.7(0.5˝)	12.7(0.5˝)
Z	0.127(0.005˝)								25.4(1.0˝)	25.4(1.0˝)