4-Bolt Flange Bearing, Ball Bearing Insert Type, 1 In. Bore Dia., Bolt Hole Center-to-Center 2-3/4 In., Cast Iron Bearing Housing Material Type, Eccentric Locking Collar Shaft Locking Type, 52100 Chrome Steel Bearing Insert Material, RCJ Series, Bolt Size 7/16 In., Overall Height 1-13/16 In., Overall Width 3-3/4 In., Overall Length 3-3/4 In., Bearing Lubrication Mobil Polyrex EM or NLGI #2 Equivalent, Dynamic Load Capacity 3550 lb., Static Load Capacity 1730 lb.