TSUBAKI BB20-2GD Cam Clutch

Tsubaki BB20-2GD Cam Clutch Description The Tsubaki BB20-2GD is a high-performance cam clutch, also known as a freewheel or one-way bearing. It is designed to transmit torque in one direction while allowing free rotation in the opposite direction. This model is built to the dimensional standards of a 6204 series ball bearing, allowing for compact and simple integration into existing systems. The ‘2GD’ suffix indicates it is sealed on both sides and pre-filled with grease for maintenance-free operation, with keyways on both the inner and outer races for secure torque transmission. Specifications Manufacturer: Tsubaki Model: BB20-2GD Bore Diameter: 20 mm Outer Diameter: 47 mm Width: 14 mm Nominal Torque Capacity: 78 N-m Max. Overrunning Speed (Inner Race): 3600 rpm Max. Overrunning Speed (Outer Race): 1800 rpm Sealing: 2GD (Seals on both sides, greased for life) Label Info Type: BB20-2GD Lot no.: L0770503 Date Code: 20171124 Application Ideal for a wide range of industrial applications including conveyor systems (backstopping), printing machinery (indexing), and fan drives (overrunning), where precise, one-way motion control is required. Country of Origin Made in Japan. CO2 Impact By purchasing this pre-owned component, you are helping to avoid the CO2 emissions associated with new manufacturing, estimated at 0.22 kg. Availability This item is in stock and ready for immediate dispatch. Order now from profideals for expert support and fast delivery. FAQ What does the ‘2GD’ suffix mean for the Tsubaki BB20-2GD?The ‘2G’ indicates that the clutch is supplied with grease and has seals on both sides, making it a maintenance-free unit. The ‘D’ specifies that there is a DIN 6885.1 keyway on the outer race, in addition to the standard keyway on the inner race. Can this cam clutch be used as a direct replacement for a standard 6204 ball bearing?While the BB20-2GD has the same principal dimensions as a 6204 series deep groove ball bearing (20x47x14 mm), it is functionally different. It is a one-way clutch and does not support axial loads like a ball bearing. It should only be used in applications designed for a cam clutch, such as indexing, backstopping, or overrunning. What is the correct installation procedure for the BB20-2GD?The BB20-2GD should be press-fitted into its housing and onto the shaft. It is crucial to only apply pressure to the race being fitted (e.g., press on the outer race when installing into a housing). Never use a hammer directly on the clutch. Ensure the direction of rotation matches the arrow on the inner race for correct engagement. Last Update: Friday, March 13, 2026 profideals is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners.