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 PLC2Day 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.

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.

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

PLC2DAY 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.