Specifications

65
www.milleruidpower.com
Heavy-Duty Hydraulic Cylinders
HV2 Series
Catalog HY08-M1140-3/NA
Miller Fluid Power
Des Plaines, IL
Milton, Ontario Canada
Thrust Key Mountings
Thrust key mountings eliminate the need of using
tted bolts or external keys on side mounted cylinders.
Cylinder Models 72 and 74 can be provided with the
bushing retainer plate extended below the mounting side
of the cylinder (see illustration below). This extended
retainer plate can then be tted into a keyway milled into
the mounting surface of the machine member.
Dim. PD
Models 72, 74Dim. PA
Dim. FA
.361
.611
.611
.736
.861
.861
.986
.986
Bore
1.50
2.00
2.50
3.25
4.00
5.00
6.00
8.00
+.000" -.001"
W
PD
FA
INTEGRAL KEY
PA
Rod Bushing Drain
Rod bushing drains permit capture of uid that may
accumulate between the primary rod seal and the
wiperseal. A 1/8 NPTF port is provided in the bushing
retainer or cylinder head (see table below) for connec-
tion of plumbing that ows oil back to the reservoir.
1
On 5.500” diameter piston rods, with drain in position 2 or 4, the port will be oset 18 degrees clockwise from the position specied.
Drain Port Location
The full square retainer, key retainer, or mounting ange
thickness is increased on bore and rod combinations listed
in the table at right. The piston rod is extended on 51, 53,
65 and 66 mounts to provide the standard ‘W’ dimension.
Rod Bushing Drain / Thrust Key Mountings
Bore Rod Dia.
50, 52, 62, 66, 68,
72 (no key),
74 (no key),
81, 82, 84,
87, 89, 94
51
53
61
65 68
72, 74
With Thrust
Key Plate
1.50
0.625 Head Head Head Head Head
1.000 Full Retainer Full Retainer Flange Retainer Head Key Retainer
2.00
1.000 Bolted Retainer Full Retainer Flange Retainer Head Key Retainer
1.375 Full Retainer Full Retainer Flange Retainer Head Key Retainer
2.50
1.000 Bolted Retainer Bolted Retainer Flange Retainer Head Head
1.375 Bolted Retainer Bolted Retainer Flange Retainer Head Head
1.750 Bolted Retainer Bolted Retainer Flange Retainer Head Key Retainer
3.25 All Bolted Retainer Bolted Retainer Flange Retainer Head Head
4.00 All Bolted Retainer Bolted Retainer Head Head Head
5.00
2.000
– 3.000
Bolted Retainer Bolted Retainer Head Head Head
3.500 Bolted Retainer Bolted Retainer Flange Retainer Head Key Retainer
6.00
– 8.00
All
1
Bolted Retainer Bolted Retainer Head Head Head
Use of translucent tubing as the drain to reservoir line can
provide visual indication of a need for rod seal service
when the cylinder bushing is not easily visible within the
equipment. Specify rod bushing drain port option and the
drain port location, position 1, 2, 3, or 4.
Bore Rod Dia.
Retainer or Mounting Flange
Thickness
1.50 1.000 0.63
2.00 1.375 0.75
2.50 1.750 0.88
3.25 1.750 & 2.000 0.88
1.44
1.81
2.06
2.63
2.94
3.69
4.25
5.25
0.19
0.31
0.31
0.38
0.44
0.44
0.50
0.50