October 2019

October 2019 www.pwemag.co.uk Plant & Works Engineering | 35 Focus on: Seals, Bearings & Lubrication Process, Controls & Plant drive, reducing the amount of equipment, such as cranes and alignment tools, that need to be rented to complete the job. Moving the conveyor belt to access the pulley, and moving the pulley and gearbox, can be very dangerous operations to carry-out since these components are often heavy and elevated above ground. This increases the risk to maintenance personnel. By contrast, the in- situ replacement with a split bearing only requires the slight raising of the shaft and little or no disturbance of the drive coupling or gearbox. This greatly reduces the exposure of workers to safety hazards. As a further benefit, the use of a sealed split bearing also greatly reduces the need for lubrication – approximately 90 to 95% less grease can be used – resulting in reduced costs, safety risks and environmental impact. IF YOU’RE READING THIS, THEN SO ARE 30,000+ ENGINEERS IMAGINE THE IMPACT YOUR ADVERTISEMENT COULD HAVE Contact Damien Oxlee at PWE Tel: 01732 370342 Plant & Works Engineering www.pwemag.co.uk Standard bearing Safety lockout/tagout Block machine (pulley) from rotation Block and move belt to access pulley Disconnect gearbox coupling from motor Disconnect gearbox coupling from machine Remove coupling from machine Lift and remove gearbox Remove split block housing cap Lift and support machine shaft Remove and replace bearing Replace housing cap Reposition gearbox Connect gearbox to machine Connect gearbox to motor Check alignment of motor to gearbox Remove machine blocking Remove safety lockout/tagout. Split bearing Safety lockout/tagout Block machine (pulley) from rotation Remove split block housing cap Lift and support machine shaft Remove and replace bearing Replace housing cap Remove machine blocking Remove safety lockout/tagout. Sequence of procedures for replacing a bearing in the trapped position