HA Series From 50 to 500 kN

Standard versions of the HA series fatigue testing machines in the 50 to 500 kN range have the testing actuator mounted in the lower crosshead, below the test area. They are ideal for test arrangements which require temperature chambers or furnaces to be installed in the test area. The positioning of the actuator prevents heated air from rising and causing heating of the actuator; it also prevents oil from dripping into the heated test area.

LCF (low cycle fatigue) testing is among the tests that can be performed using the HA load frame.

Servohydraulische Prüfmaschine der HA-Baureihe für Dauerschwingversuche

Technical Overview

The HA fatigue testing machine's test frame features extremely high stiffness, resulting in natural resonance. To avoid unwanted flexural stresses in the specimen the load frames are accurately aligned.

Description

  • HA series servohydraulic testing machines are available in various sizes for test loads from 50 kN to 500 kN.
  • The standard testing actuator stroke is 100 mm or 250 mm.
  • The servohydraulic testing machine can be supplied for 210 bar or 280 bar system pressure.
  • The load cell is attached to the upper crosshead as standard.
  • The upper crosshead is adjustable. It can be optionally equipped with a hydraulic crosshead clamping and lift cylinders.

Advantages & features

  • 4 standard nominal ratings from 50 kN to 500 kN
  • convenient working height
  • particularly suitable for integration of a high-temperature heating device
  • hard-chromed columns for precise guidance of upper crosshead
  • hydraulic clamping and adjustment for easy positioning of upper crosshead
  • integrated oil-sump for collecting minor leakage
  • safety housing to comply with CE Machinery Directive depending on application

Technical data

Dynamic nominal force

50

100

250

500

kN

Crosshead clamping

electro-hydraulic

electro-hydraulic

electro-hydraulic

electro-hydraulic

Crosshead adjustment

electro-hydraulic

electro-hydraulic

electro-hydraulic

electro-hydraulic

A - max. height of test frame

2750 (3250)[1]

2750 (3250)[1]

3040 (3540)[1]

3430 (3930)[1]

mm

AK - tilted dimension for installation

2820 (3320)[1]

2820 (3320)[1]

3195 (3695)[1]

3650 (4125)[1]

mm

B – max. width of test frame

1079

1079

1179

1525

mm

C – max. depth of test frame

780

780

790

1390

mm

D1 – column spacing

565

565

670

800

mm

E – column diameter

80

80

100

120

mm

F - height of top edge of lower crosshead[2]

1010

1010

1030

1020

mm

G – max. test area height[3]

1450 (1950)[1]

1450 (1950)[1]

1750 (2250)[1]

2000 (2500)[1]

mm

H – max. working test area height[4]

1372 (1872)[1]

1372 (1872)[1]

1659 (2159)[1]

1900 (2400)[1]

mm

J – crosshead displacement range

1000 (1250)[1]

1000 (1250)[1]

1150 (1400)[1]

1250 (1400)[1]

mm

Weight[5]

920 (970)[1]

920 (970)[1]

1520 (1600)[1]

3600 (3720)[1]

kg

Frame stiffness with crosshead separation 1000 mm

673

673

967

2100

kN/mm

Suitable for actuators with maximum stroke

250

150

150

100

mm

Item Number

Standard height

039825

025238

924810

935267

Extra-high + 500 mm

073968

935832

073969

073970

  1. Variant with height increased by 500mm
  1. With vibration-damping feet
  1. Distance between upper and lower crossheads
  1. Distance between piston flange and upper crosshead with piston retracted
  1. Weight without actuator, load cell or any fixtures

Design

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Layout der servohydraulischen Prüfmaschine HA-Baureihe

3:00

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