Hansen Uniminer

Hansen P4 UniMiner

Hansen Industrial Gearboxes - P4 Alignment-Free Drive

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The P4 UniMiner gear units are compact and optimized for mining and other applications involving bulk-material handling.

  • Drop-In replacement for most alignment-free drives
  • Split-housing design
  • Compact to fit tight spaces
  • Variety of accessories to meet your needs

5 Sizes C - G in M series 2 Sizes G - H in Z series

Power Mechanical power up to 1738 kW
Torque Torque up to 100,445 Nm
Ratios Ratios from 8:1 to 71:1
Accessory Options Motor lantern and scoop, motor base, backstop, swing base, flexible or hydro-dynamic couplings, belt-drive arrangements
Low Speed Shaft Solid (standard) Rigid-Rigid, Keyed Hollow, Shrink Disc Hollow
Bearings Tapered, cylindrical or spherical roller types

Grey cast iron (standard) or ductile iron (optional) machined on CNC machining centers

Tilt angles of +/- 3 degrees without forced lubrication

Key Facts

Up to 100,445 Nm and 7.5in. (190mm) Shaft Size
Drop-in for Model R, as well as sizes 405, 425, and 2090.
From 8:1 to 71:1, custom ratios can meet your needs.


Universal, flippable, alignment-free housing design with pilot for lantern housing along with horizontal-split housing for easy maintenance

Easy Maintenance

Accessible covers for service on-the-spot inspection and maintenance, as well as optimized-bearing selections for longer service life


Precision carburized and ground gearing delivers maximum capacity, minimal loss and quiet operation. Low-noise geometry in high-speed gear sets

Oil Guard™

Dynamic drain-back, maintains positive lubrication of high-speed shaft


Standard epoxy paint withstands harsh mining environments. Rugged steel-cased, filtered breathers are suitable for dusty environments


Wide variety of motor-installation accessories include: lantern housings, scoop brackets, common bases, and belt-drive arrangements


Shaft sealing incorporates dual grease-purgeable seals (Split-seal retainers available as an option)


Standard UniMiner built for 3 degrees of tilt in all directions


Choose from a variety of mounting options to meet your needs. Solid Shaft, Keyed-Hollow Bore, or Shrink Disc options are available.

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Do you have questions about the Hansen P4 UniMiner Gear Unit? Below are some of our most commonly asked questions, or you can view our Support area under Knowledge for more frequently asked questions and answers.

Hansen P4 units use one of the following systems:

  • Splash Lubrication (standard with horizontal shaft gear units for speeds between 750 and 1800RPM at the high speed shaft.  Gears and output shaft bearings are lubricated by immersion in the oil bath.  Oil splash from gears fill the oil pockets in the housing, assuring gravity circulation lubrication of the bearings via channels in the housing and covers.)
  • Force Feed Lubrication (all rotating elements above oil bath level are lubricated by a gear pump forcing the oil through pressure lines.  Forced feed lubrication is available as circulation lubrication or pressure lubrication.

Emergency 24h Contact


In case of after hours service emergency, please contact the number above.

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