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.
Maximum working oil pressure with permitted piston displacement of HMV(C)…E nuts:
- 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
Hydraulic nuts with metric threads HMV E series
Technical data
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Thread form
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HMV 10E - HMV 40E
| ISO 965/111-1980 tolerance class 6H
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HMV 41E - HMV 200E
| ISO 2901-1977 tolerance class 7H
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Table with dimensions of hydraulic nuts with metric threads HMV E series.
Hydraulic nuts with inch threads HMVC E series
Technical data
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Thread form
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HMVC 10E - HMVC 64E
| American National Form Threads Class 3
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HMVC 68E - HMVC 190E
| ACME General Purpose Threads Class 3 G
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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
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Accessories
Accessories Mounting fluid LHMF 300 Recommended pumps HMV(C) 10E - HMV(C) 54E 729124 / TMJL 100 / 728619 E / TMJL 50 HMV(C) 56E - HMV(C) 92E TMJL 100 / 728619 E / TMJL 50 HMV(C) 94E - HMV(C) 200E 728619 E / TMJL 50 For SKF Drive-up Method Dial indicators TMCD 5P (Parallel dial 0-5 mm) TMCD 1/2R (Right angle dial 0-0.5 in) TMCD 10R (Right angle dial, 0-10 mm) Digital pressure gauge THGD 100 (100 MPa / 15000 psi, G 1/4 connection) -
Spare parts
Hydraulic nut drive-up adapter
For the previous generation SKF HMV(C) hydraulic nuts

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