Uniaxial Monorail Triaxial Monorail Twin Wire Flying Arm Twin Wire 1000Kg Twin Wire Triaxial Twin Wire Mini Twin Wire Penetrator Playground Tester Safety Shoe Machine Chin Bar Machine Penetration Machine

Projection/Surface Friction (A) Projection/Surface Friction (B)

Projectile Shooter Ballistic Cannon High Velocity Ballistic Cannon Low Velocity

Control Center System Cadex Software Accelerometer Uniaxial Accelerometer Triaxial Load Cell Load Cell Australian Body Padding Load Cell Kit Penetration Control Box Control Box Velocimeter (Time Gate) Velocimeter (High Velocity)

Laser Table Pen & Headform Holders System Check Equipment Anvils Penetration Headform Holder Clamp Ball Arm Linear Imp./Penetr. Penetrator Device for Monorail NOCSAE Impact Accessories CSA Anvils Flying Arm Remote Control Monorail Base Monorail Drop Carriage Monorail Ball Arm Holder Monorail Track

EN960 Half, Magnesium K1A EN960 Full, Magnesium K1A D.O.T J.I.S Solid Wood Iso EN960 Full, Urethane Mountaineer's Headform Cell Kit ISO Headform Penetration CSA Penetration EN960 / ISO Penetration DOT ISEA Size 7 Alderson Penetration Hard Wood BSI Penetration Hard Wood EN1077 EN168 Headform High Temperature Headform Breathing Test Headform Photometry Test Headform N.I.J Ballistic

ASTM BSI DOT automatic Snell ECE-22 Compression/Tension Machine

American Roll Off European Roll Off Australian Roll Off NOCSAE Retention Leg

UV Chamber Unit Rain Conditioning Machine Cold Conditioning Machine Hot Conditioning Machine Radient Chamber

Field of Vision Goniometer Sand Abrader Machine Fogging Ocular Spectrophotometer Refractive Powers Bench Light Diffusion Bench

Ball Arm

The ball arm is the piece that contains the accelerometer and allows the headform to rotate.

The Ball Arm is the piece that contains the accelerometer that calculates the speed of the impact. It is locked in place between the clamp and the head form.

The Ball Arm has been custom designed for our helmet testing machines. If you desire a custom design for use with another machine please provide the following information with your order.

The angularity of the arm refers to the drawing measurement C. The different angles most commonly used are 20°, 25°, 30°and 35°. The length of the arm refers to the drawing measurement A. The diameter of the arm refers to the drawing measurement B. Material requested (see below).

The ball arm can be made of three different types of materials to reach different weights depending upon the configuration of your drop assembly. Magnesium: approx 425 grams Aluminum: approx 620 grams Stainless Steel: approx 1575 grams

Description A E J M O Spherical-Impactor Head Form size 1820 2415 3100 3130 3200 3100 Clamp 758 1173 488 458 388 488 4 bolts 82 82 82 82 82 82 Accelerometer kit 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

4 bolts: Are used to secure the clamp to the head form. Only 5/16 NC 18 - 1 3/4 inch length bolts should be used to avoid any damage to the tread in the head form. Accelerometer kit: Consists of the accelerometer sensor, support bed, cable. Drop Carriage / Flying arm: The drop guiding system on the machine that will maintain the head form and other parts of the drop assembly in the trajectory of the impact. Ball Arm: The Ball Arm contains the accelerometer sensor and is the moving joint connected to the head form. It allows for various positioning of the head form.