Chair Swivel Testing Machine

Application

This test applies to all types of chairs with a swivel seat.

Purpose of Test: This machine is designed to evaluate the ability of a chair to withstand stresses and wear caused by repeated swiveling.

Technical parameter

a).Platform berpusing

-Can set the clockwise and counter clockwise rotation

-Range of rotation:0-360°

-Maximun diameter:100mm

-Actuated by double acting pneumatic cylinder

-Adjustable rotation speed 5 to 15 cycles/minute

b).Counter panel:

-Power supply:single phase AC 220V.1KW

-ON/OFF switch button

-6 -digits Electronic Predetermine counter(EPC)

• The EPC will register every stroke of the cylinder up to six digits
• Will stop the test opereation to the preset stroke
• The EPC will display the number of stroke achieved during the test
• EPC also able to store the number of cycles when the power interruption take place and able to display the actual reading and contines counting when operation resumes.
• The singnal shall maintain until the counter is reset.

c).Stopper- to restain the chair base from sliding.

Note:One 360° Rotation is counted as one cycle.

i. Swivel test-cyclic (ANSI/BIFMA ×5.1-2017, (ANSI/BIFMA X5.9-2017,clause 8)

II. Swivel test-cyclic (ANSI/BIFMA X5.9-2020,clause 19)

III.Swivel test & caster and chair base durability (BS EN 1728:2012,clause7.11&7.13)

Specifications
According to test Standard: BIFMA X5.1-2002, Test No. 9
1. Applicability: This test applies to all types of chairs with a swivel seat.

Purpose of Test: this machine is designed to evaluate the ability of a chair to withstand stresses and wear caused by repeated swiveling.

Machine Mechanism

Standards
DIN 4551, EN 1335, NEN 1812, BIFMA X5.1, BSI/BS 5459, EN 581-2

Reference Doc: BIFMA X5.1-2017 Swivel Test

Chair Test Step

• The chair shall be restrained on a platform. Either the seat or the platform shall be restrained from rotation.
• If the seat adjustable, set it to the maximum seat position. Set all other adjustable features to the normal use condition.
• A 122 kg (270 lb.) load shall be placed on the seat such that the centre of gravity of the load is 51 to 64 mm (2 to 2.5 in) forward of the centerline of the rotational axis as shown in Picture 1.
• The cycling device shall be adjusted to rotate the lesser of the following: the available range of rotation or 360 degrees ± 10 degrees. If the available range of rotation is less than 360 degrees, the rotation of the test machine shall be adjusted such that the swivel mechanism touches but does not override the stops. The rotation may be either bidirectional or unidirectional.
• For chairs that swivel 360 degrees, a cycle is one full rotation. For chairs that swivel less than 360 degrees, one cycle is rotating from one stop to the other stop.
• The seat or platform shall rotate for 60,000 cycles at a rate between 5 and 15 rotations per minute.
• If the seat height is adjustable set the height to its lowest position.
• For all chairs, continue the test for an additional 60,000 cycles to a total of 120,000 cycles.

Testing Image:

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