Specifications-Tool; Specifications-Hydraulic Power Source - Greenlee Fairmont H4645 Operation, Service And Parts Manual

Rail cut-off saw
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Specifications—Tool
Height ....................................................................................................... 15-3/4 in.
Length (Maximum measurement of tool extended) ........................................ 39 in.
Length (Powerhead) ....................................................................................... 30 in.
Length (Extended Arm and Clamp Assembly) ............................................... 24 in.
Width .............................................................................................................. 24 in.
Weight (Total) ............................................................................................... 58 lbs.
Weight (Arm and Clamp Assembly) ............................................................. 31 lbs.
Weight (Powerhead) .................................................................................... 27 lbs.
Abrasive Cutting Wheel (Diameter) ................................................................ 16 in.
Center Hole of Cutting Wheel
(Nominal) ................................................................................................... 1 in.
Use only 1/8" – 5/32" thick, high-strength, reinforced, abrasive cut-off wheels
rated for at least 3800 rpm meeting ANSI B7.1-1978 class 10.
Specifications—Hydraulic Power Source
• Power source flow must not exceed 10 gpm (37.9 lpm).
• Limit relief pressure to 2000 psi (137.9 bar).
Failure to observe these warnings could result in excessive cut-off speed
and over-pressurizing the hydraulic system causing severe injury to
operator or bystanders.
Any hydraulic power source used with this tool must meet the following requirements:
Type of Hydraulic System .................................................................. Open-Center
Flow - Minimum ............................................................................8 gpm (30.3 lpm)
Recommended ..................................................................9 gpm (34.1 lpm)
Maximum .........................................................................10 gpm (37.9 lpm)
Operating Pressure
Minimum ......................................................................................... 1000 psi
Maximum ........................................................................................ 2000 psi
Filtration ................................................................................. 10 Micron (Nominal)
Pressure Relief Setting ...........................................................2000 psi (137.9 bar)
Back Pressure - *Maximum .........................................................200 psi (13.8 bar)
*
200 psi (13.8 bar) is the maximum agreed standard back pressure for the Hydraulic Tool Manufacturers Associa-
tion (HTMA). Greenlee Fairmont tools will operate satisfactorily at this standard.
1. Maximum hydraulic fluid temperature must not exceed 140 F (60 C) at the maximum expected ambient tempera-
ture. A sufficient oil cooling capacity is needed to limit the hydraulic fluid temperature.
2. Maximum hydraulic flow must not exceed 10 gpm (23 lpm). Install a flow meter in the return line to test the rate of
hydraulic flow in the system before working the tool.
3. Pressure relief valve must not exceed 2000 psi (137.9 bar) @10 gpm (23 lpm). The pressure relief valve must be
located in the supply circuit between the pump and tool to limit excessive hydraulic pressure to the tool.
Figure 2 shows a typical hydraulic power source being used with the tool.
Greenlee Textron Inc. / Subsidiary of Textron Inc.
H4645 Rail Cut-Off Saw
6
4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070

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Fairmont 48600

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