Features No lubrication in spite of metal with maintenance-free igubal polymer spherical bearings Lubrication-free igus spherical balls now available from Treotham with cost-effective sheet metal housing.Read More Alexandra HaynesOctober 12, 2021, 10:25 amOctober 12, 2021 Comments Off on No lubrication in spite of metal with maintenance-free igubal polymer spherical bearings 90