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EN960 Half Headform Magnesium K1A

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half magnesium The half headform Magnesium KIA is currently used in uniaxial impact tests (Z direction).

Features
  • Material : Magnesium K1A alloy
  • Sizes: all sizes are available
  • 100% CNC machined
  • Testing lines are CNC grooved
  • Complies with ISO/DIS 6220 and EN960 standards.
  • Headform for the EN960:2006 standard is also available.
  • Sizes 495, 515, 535, 575, 605 and 625 are also available.
  • Each Headform is shipped with a certificate of calibration, serial number and a data sheet.
  • The Half Headform Magnesium K1A is calibrated in the center of gravity at the intersection of the vertical axis.
  • The casting is done with permanent steel moulds, this method eliminates any contaminants.

Inside View CNC grooved testing lines
Inside view CNC grooved testing lines

The Half ISO Magnesium K1A Headform is identified with reference lines (see sketch below). These lines are grooved into the Headform to provide the end user with more flexibility to align positions with their products.

  • Reference plane
  • Basic plane
  • Central vertical axis transversal plane
  • Central vertical axis longitudinal plane
Bolt Pattern
ISO Uniaxial

Sizes
half magnesium sizes
All ISO/DIS 6220, EN960 and EN960:2006 sizes are available.

In the table below you will find several different headform sizes. Six sizes have been selected for our regular products line that we have in stock at all times, but it is possible to order other formats.

The sizes of those headforms (i.e. A, C, E, J, M, O) are currently used for 90% of all world standards. All other sizes can be manufactured on request with only a few days delay depending on our production schedule.
SIZE Delta Y (mm) Delta X (mm) Mass Grs Circumference
A 89.5 24 1525 ± 35 500
B 91 24.5 510
C 93 25 520
D 94.5 25.5 530
E 96 26 2050 ± 35 540
F 97.5 26.5 550
G 99 27 560
J 102.5 27.5 2585 ± 35 570
K 104 28 580
L 104.5 28.5 590
M 107 29 2950 ± 35 600
N 108.5 29.5 610
O 110 30 3285 ± 35 620
P 112 30.5 630
Q 113.5 31 640

To see a specification sheet about the half MAG.K1A headform, click the corresponding link: A  C  E  J  M  O 

Example
Example of how to build and configure your drop mass assembly.

Description A C E J M O Spherical-Impactor
Head Form size 1820 ? 2415 3100 3130 3200 3100
Clamp 758 ? 1173 488 458 388 488
4 bolts for clamp to head 82 ? 82 82 82 82 82
Accelerometer kits 10 ? 10 10 10 10 10
Drop Follower / Flying arm 730 ? 730 730 730 730 730
Aluminum Ball arm 0 ? 590 590 590 590 590
Stainless steel Ball arm 1600 ? 0 0 0 0 0
Magnesium Ball arm 0 ? 0 0 0 0 0
 
Total 5000 ? 5000 5000 5000 5000 5000
Standard Request(total drop mass) 5.0?0.1 ? 5.0?0.1 5.0?0.1 5.0?0.1 5.0?0.1 5.0?0.1


  • Clamp: The clamp is the holding device that stops the ball arm from moving and maintains the headform in position during the impact test.
  • 4 bolts for clamp to head: Are screwed with the clamp on the headform.
    Only 5/16 NC 18 - 1 3/4 inch length bolts should be used to avoid any damage to the tread in the headform.
  • Accelerometer kit: The accelerometer kit is the assembly of the sensor, accelerometer, support bed, and cable.
  • Drop carriage / Flying arm: Is the drop guiding system on the machine that will maintain the headform and other parts of the drop assembly in the trajectory of the impact.
  • Ball Arm: The moving joint that connects to the headform allows adjustable positioning. It also has space inside itself for the accelerometer sensor.
Assembly diagram

Problems Encountered
Problems Encountered