RS PRO Bronze Plain Bushes. RS PRO ‘s plain bushes are cylindrical components made from bronze used to support and guide spur gears. Spur gears are a type of cylindrical gear that have straight teeth that run parallel to the axis of rotation and are used to transmit power between two parallel shafts. The primary purpose of a bush is to help the gears rotate smoothly and without excessive friction, while also reducing wear and tear on the gears themselves. Features and Benefits. ;ul> ;li>Sintered bronze bush ;/li> ;li>Oil-less ;/li> ;li>Suitable for use with Delrin gears ;/li> ;/ul>. Specifications. ;ul> ;li>Bore tolerance: G7 ;/li> ;li>OD tolerance: s7 ;/li> ;li>Length tolerance: js13 ;/li> ;/ul>. RS PRO Bronze Plain Bush Variant – Available Separately. ;ul> ;li>Length: 7 mm, Shaft dia. 3mm, RS stock no: ; 521-7708 521-7708 ;/li> ;li>Length: 8 mm, Shaft dia. 3mm, RS stock no: ; 521-7720 521-7720 ;/li> ;li>Length: 9 mm, Shaft dia. 4mm, RS stock no: ; 521-7736 521-7736 ;/li> ;li>Length: 12 mm, Shaft dia. 4mm, RS stock no: ; 521-7742 521-7742 ;/li> ;li>Length: 12 mm, Shaft dia. 5mm, RS stock no: ; 521-7758 521-7758 ;/li> ;li>Length: 14 mm, Shaft dia. 5mm, RS stock no: ; 521-7764 521-7764 ;/li> ;/ul>. Applications. The bushes are typically installed in the gear housing or gearbox and serve as a bearing surface for the gear teeth, allowing them to rotate without coming into direct contact with the housing. More information:  | | Shaft Diameter: | 5mm | Outside Diameter: | 8mm | Material: | Bronze | Length: | 14mm |
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