Electric hydraulic power unit HKA 291 series
bolt tensioneroilcompact

Electric hydraulic power unit - HKA 291 series - RINGSPANN - bolt tensioner / oil / compact
Electric hydraulic power unit - HKA 291 series - RINGSPANN - bolt tensioner / oil / compact
Electric hydraulic power unit - HKA 291 series - RINGSPANN - bolt tensioner / oil / compact - image - 2
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Characteristics

Power source
electric
Applications
oil, bolt tensioner
Other characteristics
compact, modular
Operating pressure

Max.: 245 bar
(3,553 psi)

Min.: 150 bar
(2,176 psi)

Nominal power

1.6 kW
(2.18 hp)

Flow rate

4.3 l/min
(1.14 us gal/min)

Tank capacity

2.7 l, 5 l
(0.71 gal, 1.32 gal)

Description

For the operation of hydraulic brakes
Available for a wide pressure and temperature range


Features
  • Compact design
  • Optimum heat dissipation thanks to the extruded profile
  • With manual hand pump function as standard
  • Ambient temperature: -20 °C / +50 °C
  • Flexibly expandable
  • 2.7 litre oil usable volume as standard
  • Electrical level and temperature monitoring and electrical thermal switch (oil temperature)


Notes
  • Fastening: 4 mounting threads M8 x 15 deep


Options
  • Pressure switch for pressure monitoring
  • Additional switching valves for special functions
  • Further options can be flange-mounted in modular design, e.g. step braking, soft braking or pressure accumulator
  • Control cabinet for controlled operation of the hydraulic unit manually or externally
  • Terminal box

Catalogs

No catalogs are available for this product.

See all of RINGSPANN‘s catalogs

Exhibitions

Meet this supplier at the following exhibition(s):

Electra Mining Africa
Electra Mining Africa

7-11 Sep 2026 Johannesburg (South Africa)

  • More information
    ROG
    ROG

    21-24 Sep 2026 Rio de Janeiro (Brazil)

  • More information

    Other RINGSPANN products

    Industrial Brakes

    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.