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Those familar with the SAE 9T splined shaft J498 16/320P will have at some point experienced problems with them shearing at the waist.

For the past 10 years Vivoil have manufactured this shaft without the waist, thus increasing the torque from 67Nm to 100Nm. This greatly improves the longevity of pumps fitted with this shaft, especially those with large displacements.

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Gemma Hydraulics PA to the Directors
Gemma works closely with the directors and technical team at MA Hydraulics, helping communicate the company’s practical knowledge of hydraulic components and systems. She produces and coordinates content covering hydraulic products, maintenance, troubleshooting and applications, drawing on the experience of the wider MA Hydraulics team.