AKN 637/3-2Z/F (5pcs)

Brammer Miniature Deep Groove Ball Bearing 3x7x3mm

Description

This is a miniature deep groove ball bearing from Brammer, part number 637/3-2Z/F. It is engineered for applications requiring high precision and reliability in a compact form factor. The bearing’s robust construction ensures smooth operation and a long service life, making it an excellent choice for demanding industrial environments.

Specifications

• Manufacturer: Brammer
• Type Number: 637/3-2Z/F
• Inner Diameter (Bore): 3 mm
• Outer Diameter: 7 mm
• Width: 3 mm
• Seals: 2Z (Double-sided metal shields)
• Material: Steel

Label Info

• Brand: BRAMMER
• Part Number: 637/3-2Z/F
• Quantity: Item is one bearing (from a box of 5)

Application

Ideal for use in small electric motors, medical devices, robotics, instrumentation, and other precision machinery where space is constrained and high rotational speeds are necessary.

Country of Origin

The country of origin is not specified on the product packaging.

CO2 Impact

Choosing this pre-owned component saves approximately 0.01 kg of CO2 compared to manufacturing a new one, contributing to a more sustainable industrial sector.

Availability

This item is in stock and ready for immediate dispatch. We offer this bearing individually, although the original packaging contains five units. Condition is new old stock. Order now from spareparts2day for expert support and fast delivery.

FAQ

What does the ‘2Z’ suffix in 637/3-2Z/F signify?

The ‘2Z’ (or ‘ZZ’) suffix indicates that the bearing is fitted with two metal shields, one on each side. These shields protect the bearing’s interior from larger contaminants and help retain the factory-lubricated grease, making it maintenance-free.

Is this bearing suitable for high-speed applications?

Yes, miniature deep groove ball bearings like this one are designed for high rotational speeds. The steel construction and low-friction design are ideal for applications such as small electric motors, dental equipment, or RC models. However, always check the manufacturer’s specific speed rating for your application’s load conditions.

Can I use a different type of lubricant with this bearing?

This bearing comes pre-lubricated with grease suitable for a wide range of general-purpose applications. While the metal shields are non-contact and can be removed for cleaning and re-lubrication, it is generally not recommended unless required for a very specific application (e.g., using a special oil for ultra-high speed). Altering the lubrication may affect performance and lifespan.

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Last Update: Friday, March 13, 2026