GB20SF Info:
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The GB20SF is a hydraulic installation tools designed specifically for the efficient installation of 1/2”, 5/8”, 12mm, 14mm & 16mm diameter Bobtail® fasteners. It weighs approximately 11 lbs. (4.99 kg) and can be operated in any position. It has a 2.00” (5.08cm) fastener stroke and a maximum rated pull load of 20,650 lbs. (92kN) @ 7,000 psi. (483 bar) and a maximum rated return load of 9,500 lbs. (42 kN) @ 5000 psi. (345 bar).
The GB20SF (Electric actuated) installation tool operates on hydraulic pressure developed by the GB947 Powerunit. Set both pull and return pressures per instruction manual for diameter of fastener being installed. The tool comes equipped with 2 feet (.61 m) of hydraulic hoses and couplings, electric switch and cord.
| Weight | 11 lbs. (4.99 kg |
| Rated Pull Load | 20,650 lbs. (92kN) @ 7,000 psi. (483 bar) |
| Stroke | 2.00” (5.08cm) |
| Warranty | 1 year |
Nose Assembly Selection Chart - GB20SF
GB20SF SELECTION CHART
| FASTENER | DIA. | NOSE ASSEMBLY | COLLAR MATERIAL | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| GRADE 5 PULL PSI |
GRADE 5 RETURN PSI |
GRADE 8 PULL PSI |
GRADE 8 RETURN PSI |
GRADE 8.8 PULL PSI |
GRADE8.8 RETURN PSI |
GRADE10.9 PULL PSI |
GRADE 10.9 RETURN PSI |
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| BobTail® | 1/2" | BOB16-20SF-10 | 3400 | 1700 | 4500 | 2300 | - | - | - | - |
| 5/8" | BOB20-20SF-10 | 5400 | 2200 | 6700 | 2600 | - | - | - | - | |
| 12mm | BOB12MM-20SF-10 | - | - | - | - | 3200 | 1500 | 4000 | 2100 | |
| 14mm | BOB14MM-20SF-10 | - | - | - | - | 4400 | 2200 | 5100 | 2600 | |
| 16mm | BOB20-20SF-10 | - | - | - | - | 5400 | 2600 | 6700 | 3400 | |
| ---All pressures shown above are starting points, pressures may need to be adjusted up or down due to application and tooling setup. —Use pressures above for both installation and removal. —When using a 918 or 918-5 powerunit and the pull pressure from above chart is equal to or below 2500 psi 128904 Relief Valve is required. |
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CREDITS
| BOBTAIL® IS A REGISTERED TRADEMARK OF HOWMET AEROSPACE INC. |