Shimano Bottom Bracket, Threaded BSA | Deore SM-BB52, HollowTech II 68/73/83mm

The Shimano Deore / Alivio bottom bracket SM-BB52 can be found again and again

The SM-BB52 is a popular Shimano bottom bracket, which is used in countless cranks such as Alivio, Deore, and ZEE. It's 24 mm Hollowtech II standard bearings deliver an optimal stiffness-to-weight ratio and rotational efficiency. The SM-BB52 BSA bottom bracket is available in a version for 68 and 73 mm shell width and in a version for 83 mm shell width.

SM-BB52

SHIMANO - Bottom Bracket - Threaded - HOLLOWTECH II - 68/73 or 83 mm shell width

With better sealing and rotation the SHIMANO DEORE bottom bracket delivers high driving efficiency.

• Better sealing performance
• Application: All Mountain, City & Touring, Enduro, Downhill
• Type: BSA
• Shell Width: 68 mm / 73 mm, 83 mm
• Axle Diameter: 24 mm (Hollowtech II)

Technical Information:

• Bearings: Steel
• Bottom Bracket Cup Material: aluminium
• Bottom Bracket Centre Tube Material: synthetic resin

Compatibility:

• ZEE FC-M640, FC-M645
• Deore FC-M591, FC-T611, FC-M610, FC-M612, FC-M615, FC-M617, FC-M6000, FC-T6010, FC-M4100, FC-M5100, FC-M6100, FC-M6120, FC-M6130
• Alivio FC-M4050, FC-M4060, FC-T4060
• FC-M552-L, FC-M552-S, FC-M622, FC-M625, FC-M627
• FC-MT200, FC-MT500, FC-MT510, FC-MT511, FC-MT610
• FC-T551

Features:

• painted bearing cups
• high drivetrain efficiency
• improved sealing and smoother movement

Technology:

Hollowtech II
Shimano Hollowtech II is a crank bottom bracket system designed to achieve an ideal ratio of stiffness, weight, and rotational efficiency. It is based on an integration of the bottom bracket and the right crank arm and works with a 24 mm axle or bearing diameter, which has proven to be optimal in terms of stability. In many cases, the bearing cups are on the outside so that the load is better distributed. High-quality precision seals ensure long service life.

Models:

• BSA: ESMBB52B (Shell Width: 68 mm / 73 mm)
• BSA 83: ESMBB52D (Shell Width: 83 mm).

Product Specifications

• MODEL NO: SM-BB52
• SERIES: DEORE M610 Series
• Threaded BB shell width_73mm: ✔
• HOLLOWTECH II bottom bracket_Threaded bottom bracket type: ✔
• Threaded BB shell width_68mm: ✔
• Threaded bottom bracket shell width (mm)_68: ✔
• Threaded bottom bracket shell width (mm)_73: ✔

*Note: Images are for representational purposes only. Actual size / packaging varies with product type/size.

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