H1P input shaft, option F4, Code 38-3
Option F4, ISO 3019-1, Code 38-3, Diameter 38.1 taper 1:8, without key and no through-hole in the end of the
shaft
1 1/8-12UNF
7.88 ±0.8
[0.310 ±0.031]
Mounting flange surface
Flange 127 - 4 per ISO 3019-1
To be paint free
Coupling must not
overlap till this point
Shafts
To be paint free
Suitable
Key 3/8x3/8x1 1/2
Ansi B17.1
Conical keyed shaft end
Similar to ISO 3019-1
Code 38-3
125±0.5:1000
(47)
[1.850]
34.9 ±1
[1.374 ±0.039]
81.9 ±1
[3.224 ±0.039]
(38.1) [1.500]
P003 518E
Specifications
Option
F4
Tapered shaft
1)
38.1 taper without key
Torque rating
2)
Rated
3)
1116 N•m [9880 lbf•in]
Maximum
1488 N•m [13 170 lbf•in]
1)
Mating part must maintain a minimum gap width of 1.0 mm with the shaft shoulder after installation of the part.
Transmittable torque will be reduced if the minimum gap requirement is not met.
2)
For definitions of maximum and rated torque values, refer to
Basic Information
11062168, section Shaft Torque
Ratings and Spline Lubrication.
3)
Rated torque includes just the capability of the press-fit in accordance with an assumed fastener grade 5.
Tapered shaft customer acknowledgement
The Danfoss H1 tapered shaft has been designed using the industry standard ISO 3019-1, minus the
through-hole in the end of the shaft. Danfoss recommends a self-locking nut instead of a castle nut and
pin. The nut and mating square-cut key are customer supplied. The specified torque rating of the tapered
shaft is based on the cross-sectional diameter of the shaft, through the keyway, and assumes the proper
clamp and fit between shaft and coupling.
Danfoss guarantees the design and manufactured quality of the tapered shaft. The customer is
responsible for the design and manufactured quality of the mating female coupling and key and applied
torque on the nut. Danfoss has made provisions for the key in accordance to the ISO specification with
the understanding that the key is solely to assist in the installation of the mating coupling.
C
Caution
Possible hazard because torque or loading inadvertently transmitted by the customer supplied key may
lead to premature shaft failure.
Torque must be transmitted by the taper fit between the shaft and it’s mating coupling, not the key.
Technical Information
H1 Axial Piston Single Pumps, Size 069/078
Dimensions
©
Danfoss | May 2017
11062169 | BC00000058en-US0801 | 43