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 Technical Specifications / Features - Product: Hydraulic Power Unit HKA 291 - Application: For the operation of hydraulic brakes - Pressure and temperature range: Wide - Design: Compact, extruded profile for heat dissipation - Manual hand pump: Standard - Ambient temperature: -20 °C to +50 °C - Oil usable volume: 2.7 litres (standard) - Electrical monitoring: Level, temperature, thermal switch - Mounting: 4 x M8 x 15 mm threads - Expandable: Yes, modular options available

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Exhibitions

Meet this supplier at the following exhibition(s):

HILLHEAD
HILLHEAD

23-25 Jun 2026 Buxton (United Kingdom) Stand RD21

  • More information
    EXPOSIBRAM
    EXPOSIBRAM

    24-27 Aug 2026 Belo Horizonte (Brazil)

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    *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.