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HAV & WBV Lawn Mowers
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Kimbo2822  
#1 Posted : 05 March 2025 13:40:40(UTC)
Rank: New forum user
Kimbo2822

Hi All, 

Wondered if i could get some advice, i've jsut started a new role at a landscaping company. Theyve jsut purchased two new ride on lawn mowers, i've found the vibration levels but two are listed for the machines.

Max vibration on the steering wheel (m/s2) 6.37

Max vibration on drivers seat (m/s2) 1.06

When working out usage times which reading do you work from or both?

TIA
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Roundtuit  
#2 Posted : 05 March 2025 13:55:55(UTC)
Rank: Super forum user
Roundtuit

It is both that require consideration.

The drivers seat for Whole Body Vibration (these are expected in three planes x, y & z)

https://www.hse.gov.uk/vibration/wbv/calculator.htm

The steering wheel figure would be used for Hand Arm Vibration

https://www.hse.gov.uk/vibration/hav/about.htm

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thanks 2 users thanked Roundtuit for this useful post.
peter gotch on 05/03/2025(UTC), peter gotch on 05/03/2025(UTC)
Roundtuit  
#3 Posted : 05 March 2025 13:55:55(UTC)
Rank: Super forum user
Roundtuit

It is both that require consideration.

The drivers seat for Whole Body Vibration (these are expected in three planes x, y & z)

https://www.hse.gov.uk/vibration/wbv/calculator.htm

The steering wheel figure would be used for Hand Arm Vibration

https://www.hse.gov.uk/vibration/hav/about.htm

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thanks 2 users thanked Roundtuit for this useful post.
peter gotch on 05/03/2025(UTC), peter gotch on 05/03/2025(UTC)
Kimbo2822  
#4 Posted : 05 March 2025 15:47:52(UTC)
Rank: New forum user
Kimbo2822

Thanks for this.

The issue i have is i've got a new ride on lawn mower to look into. 

The manufactur vibration details provided are:

HAV at the steering wheel = 6.37                     WBV= 1.06   

When you mention to take both into consideration, how is this done? do i combine both readings to work the usage limits?

TIA 

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Kate  
#5 Posted : 05 March 2025 18:16:08(UTC)
Rank: Super forum user
Kate

No they are two separate things that you consider separately, and hope that both are below their respective safe thresholds.

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