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TPI Ceramic Bearings 7004

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TPI Ceramic Bearings 7004 Specification

Thickness
12 mm

Precision Rating
P4/P5

Inside Diameter
20 mm

Lubrication Type
Grease / Oil

Cage Material
Ceramic

Retainer
Ceramic

Bearing Type
Ceramic Bearings

Material
Ceramic

Structure
Angular Contact

Seals Type
Open / Sealed

Number Of Rows
Single Row

Bore Size
7004

Outside Diameter
42 mm

Limiting Speed
18000 - 24000 rpm

Load Capacity
High

Vibration Level
Low

Temperature Range
-40°C to 200°C

Series
7004

Dynamic Load Rating
12.7 kN

Contact Angle
15° / 25°

Weight
Approx. 0.08 kg

Static Load Rating
8.2 kN

Application
High-speed spindles, CNC machines, precision tools

Corrosion Resistance
Excellent

About TPI Ceramic Bearings 7004

TPI Ceramic Bearings 7004

Bearing Preload..Rigidity..and Measured Face Side Offset

Bearing No

Bore d (mm)

Preload

Rigidity

Measured

Preload

Rigidity

Measured

Preload

Rigidity

Measured

Preload

Rigidity

Measured

Pro

Rao

offset

Pro

Rao

offset

Pro

Rao

offset

Pro

Rao

offset

(N)

(N/ u m )

( u m )

(N)

(N/ u m )

( u m )

(N)

(N/ u m )

( u m )

(N)

(N/ u m )

( u m )

5S1-7004C

(-2)

(-7)

210

(-18)

410

(-29)

Exceptional Performance in High-Speed Applications

Designed for demanding environments, TPI 7004 Ceramic Bearings excel in high-speed spindles and CNC machines. The all-ceramic construction ensures low friction, high load capacity, and minimal vibration, making them perfect for precision tools. Their inherent corrosion resistance and thermal stability allow operation from -40C to 200C, providing consistent reliability and extended service life in dynamic industrial settings.

Advanced Engineering for Enhanced Durability

The 7004 Series features a single-row angular contact structure and is available in both 15 and 25 contact angles. This configuration, combined with P4/P5 precision ratings, facilitates smooth, accurate movementeven under heavy loads. The ceramic cage and retainer further enhance structural integrity, while optional seals (open or sealed) accommodate various lubrication profiles for versatile installation and maintenance.

FAQs of TPI Ceramic Bearings 7004:

Q: How do I select between the 15 and 25 contact angle options for the 7004 bearings?

A: Choosing between a 15 or 25 contact angle depends on your applications axial and radial load requirements. A 15 contact angle is optimal for higher speeds and greater radial loads, while 25 provides enhanced support for heavier axial or thrust loads often encountered in precision spindles and CNC machines.

Q: What benefits does the ceramic material offer over traditional steel bearings?

A: Ceramic bearings provide notable advantages such as higher durability, lower friction, improved corrosion resistance, and greater stability at elevated temperatures. These characteristics translate into longer service intervals, reduced maintenance, and superior performance in hostile or high-speed environments.

Q: In which industries and applications are TPI 7004 Ceramic Bearings most commonly used?

A: These bearings are specially designed for high-speed spindles, CNC machining centers, and precision tool manufacturing. Their low vibration and high reliability make them ideal for environments that require exacting tolerances, such as electronics manufacturing, aerospace, and advanced automotive engineering.

Q: What is the recommended lubrication process for optimal bearing performance?

A: For best results, use high-quality grease or oil, selected according to operational speed and load. Open-seal bearings may require periodic relubrication, while sealed versions offer better protection from contaminants and typically require less frequent maintenance.

Q: When should I replace a TPI 7004 ceramic bearing in my machine?

A: Bearings should be inspected regularly for any signs of increased noise, vibration, temperature, or reduced performance. With proper maintenance and lubrication, ceramic bearings generally last longer than steel counterparts, but timely replacement upon detecting wear ensures continued precision and machine safety.

Q: Where can I purchase genuine TPI 7004 Ceramic Bearings and obtain technical support?

A: TPI 7004 Ceramic Bearings are available through authorized distributors, importers, and suppliers. Purchasing from certified vendors ensures product authenticity and access to technical guidance for selection, installation, and maintenance.

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