SPECIFICATIONS Mountz FG Preset Precision Cleanroom Screwdriver models The cleanroom screwdriver models feature a polyurea grease.
TORQUE RANGES
FG CLEANROOM MODELS
FG CLEANROOM HVG MODELS
MODEL
ITEM NO.
DRIVE SIZE
WEIGHT
LENGTH
AMERICAN
S.I.
STANDARD POLYUREA GREASE
ULTRA-HIGH VACUUM GREASE
Color
FG-25z CR
076450 3– 25 ozf.in 2– 17.7 cN.m 1/4" F/Hex
2.8 oz.
4.1″
Blue Green
Translucent White
Temperature
FG-50z CR
076451
20 – 50 ozf.in 14.1 – 35.3 cN.m 1/4" F/Hex
2.8 oz.
4.1″
-40°C to +276°C
-20°C to +325°C
Application
FG-8i CR
076452
1.6 – 8 lbf.in 18 – 90 cN.m 1/4" F/Hex
7.3 oz.
5.2″
Useful in applications where the external elements in the field cannot always be controlled, such as a high-temperature spike or extreme weather conditions.
For highly sensitive applications in ultra-high vacuum.
FG-20i CR
076453
2 – 20 lbf.in 22 – 226 cN.m 1/4" F/Hex
7.3 oz.
5.2″
FG-40i CR
076454 4 – 40 lbf.in 0.4 – 4.5 N.m 1/4" F/Hex
11.5 oz.
6.3″
• Waterproof • Long operating life • Contains no metals • Inhibits rust and oxidation
• Ultra-low outgassing for optimal vacuum performance • Consistent lubrication across extreme temperatures • Superior chemical resistance in diverse environments • Anti-wear properties for extended bearing life
FG-125i CR
076455
25 – 125 lbf.in 2.8 – 14.1 N.m 1/4" F/Hex
11.5 oz.
6.3″
Features
Mountz FG Cleanroom HVG (High-Vacuum Grease) Screwdriver models For highly sensitive applications in ultra-high vacuum and optics, Mountz offers HVG cleanroom screwdrivers with a specialized ultra-high vacuum and exceptionally low vapor pressure to prevent further airborne contamination and sustain lubrication performance. Our ultra-high vacuum grease is crafted using advanced polytetrafluoroethylene. It’s characterized by ultra-low outgassing, vast temperature suitability, and superb lubrication. It is an ideal choice for diverse chemical interactions because it is chemically inert, non-toxic, and nonflammable.
• Added resistance to extreme pressure • Performs well in harsh environments • Improved performance over time For FG-8i CR, FG-20i CR, FG-40i CR, and FG-125i CR models: 20,000 cycles before re-calibration For FG-25z CR, and FG-50z CR models: 5,000 cycles before re-calibration For FG-8i CR, FG-20i CR, FG-40i CR, and FG-125i CR models: 100,000 cycles
Calibration Intervals
For all HVG models: 5,000 cycles before re-calibration
Routine Maintenance Intervals
For all HVG models: 50,000 cycles
TORQUE RANGES
MODEL
ITEM NO.
DRIVE SIZE
WEIGHT
LENGTH
AMERICAN
S.I.
For FG-25z CR, and FG-50z CR models: 50,000 cycles
FG-25z CR-HVG
076456
3– 25 ozf.in
2– 17.7 cN.m 1/4" F/Hex
2.8 oz.
4.1″
FG-50z CR-HVG
076457
20 – 50 ozf.in 14.1 – 35.3 cN.m 1/4" F/Hex
2.8 oz.
4.1″
Compatible Cleaning Solvents
Organic cleaning solvents compatible with Nitrile. Mountz recommends Isopropyl Alcohol.
Fluorinated solvent cleaners such as: • MS-250M PFPE Re-move • Castrol Brayco IC X-100 • TorrLube Solvent TS-86 • TMC-HFE-367E
FG-8i CR-HVG
076458
1.6 – 8 lbf.in
18 – 90 cN.m 1/4" F/Hex
7.3 oz.
5.2″
FG-20i CR-HVG
076459
2 – 20 lbf.in
22 – 226 cN.m 1/4" F/Hex
7.3 oz.
5.2″
FG-40i CR-HVG 076460
4 – 40 lbf.in 0.4 – 4.5 N.m 1/4" F/Hex
11.5 oz.
6.3″
FG-125i CR-HVG
076461
25 – 125 lbf.in 2.8 – 14.1 N.m 1/4" F/Hex
11.5 oz.
6.3″
6
7
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