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Hydraulic nuts

Easy application of high drive-up forces

Mounting bearings on tapered seatings can be a difficult and time-consuming job. Using an SKF Hydraulic Nut facilitates easy and quick application of the high drive-up forces required for mounting bearings. Dismounting bearings mounted on either adapter or withdrawal sleeves is also often a difficult and time-consuming job. These problems can be reduced with the use of an SKF Hydraulic Nut. Oil is pumped into the nut and the piston is pushed out with a force, which is sufficient to free the sleeve. All SKF HMV ..E nuts are supplied with a quick connection coupling to fit the SKF hydraulic pumps.
  • Wide size range, covering shaft diameters from 50 to 1 000 mm as standard
  • Full range of inch threads available, series HMVC ..E from 1.967 up to 37.410 in.
  • Quick connection coupling can be fitted on the face or side of the nut, allowing the nut to be used in areas where space is limited
  • A spare set of piston seals and maintenance kit is supplied as standard
  • To assist nut threading, a tube of lubricant is supplied with all nuts of size HMV(C) 54E and larger
  • To facilitate easy nut threading, all nuts from size HMV(C) 54E are equipped with two tommy bars and four mating holes on their front face
  • Nuts from size HMV(C) 94E are equipped with eyebolts, allowing easy handling
  • Nuts from size HMV(C) 94E have the starting position of the thread indicated, facilitating easy matching of thread positions on both the nut and mating thread
  • Special threads and sizes available on request

Maximum working oil pressure with permitted piston displacement of HMV(C)…E nuts:
  • HMV(C) 60E and smaller: 80 MPa (11 600 psi)
  • HMV(C) 62-100E: 40 MPa (5 800 psi)
  • HMV(C) 102E and larger: 25 MPa (3 600 psi)

Mounting

  • HMV ..E nut for driving the bearing onto a tapered seating (fig 1
  • HMV ..E nut screwed onto the shaft for driving in a withdrawal sleeve
    (fig 2
  • HMV ..E nut for driving the bearing onto an adapter sleeve (fig 3
  • HMV ..E nut and special stop nut for driving in a withdrawal sleeve (fig 4)

Dismounting

  • HMV ..E nut and stop ring in position to press an adapter sleeve free
    (fig 5
  • HMV ..E nut used to free a withdrawal sleeve (fig 6)

Hydraulic nuts with metric threads HMV E series

Technical data
Thread form
HMV 10E - HMV 40E
ISO 965/111-1980 tolerance class 6H
HMV 41E - HMV 200E
ISO 2901-1977 tolerance class 7H
 
Table with dimensions of hydraulic nuts with metric threads HMV E series.

Hydraulic nuts with inch threads HMVC E series

Technical data
Thread form
 
HMVC 10E - HMVC 64E
American National Form Threads Class 3
HMVC 68E - HMVC 190E
ACME General Purpose Threads Class 3 G
 
Table with dimensions of hydraulic nuts with inch threads HMVC E series

Hydraulic nuts without threads HMV E/A101 series

Accessories and spare parts for hydraulic nuts

Hydraulic nut drive-up adapter

For the previous generation SKF HMV(C) hydraulic nuts

SKF Hydraulic nut drive-up adapter HMVA 42/200
The SKF Drive-up Method is the preferred method for mounting spherical roller and CARB bearings on tapered seatings. In conjunction with a SKF dial indicator, the adapter HMVA 42/200 allows the previous generation of HMV nuts to be used with the SKF Drive-up Method. The adapter can be used with nuts from size HMV(C) 42 to HMV(C) 200.
  • One adapter suits previous generation nuts from HMV(C) 42-200
  • Rugged construction
  • Easy to attach to the HMV nut using strong magnets
  • Used in conjunction with SKF dial indicators
Note: The adapter kit is not required for the current generation of HMV(C)…E hydraulic nuts.


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