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Self-Aligning Ball Bearings with Dust Covers (ZZ2Z Type)

Product description:
Double-row ball bearing design, the outer ring adopts spherical raceway structure, which can automatically compensate for the installation deviation between the shaft and the bearing seat. Metal dust covers (ZZ/2Z logo) are equipped on both sides to effectively prevent dust and other pollutants from entering and maintain internal lubrication.

Main applications:

Agricultural machinery (harvester, seeding machine)

Textile equipment

Food processing machinery

Conveying system

Electric motor

Product features:

Automatic self-aligning function (compensation for angle deviation)

Double metal dust cover protection

Low maintenance design

Double-row structure enhances load-bearing capacity

Smooth operation, low noise

Adapt to harsh working environment

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Self-Aligning Ball Bearings with Dust Covers (ZZ/2Z Type) – Overview

Self-aligning ball bearings with dust covers (ZZ or 2Z type) feature a double-row ball design with a spherical outer ring raceway, enabling automatic compensation for misalignment between the shaft and housing. These bearings are equipped with metal shields on both sides (ZZ/2Z designation), effectively blocking dust and contaminants while retaining lubrication.

Technical   Specification Table (Common Models)
Model Bore Diameter (d) Outer Diameter   (D) Width (B) Dynamic Load   Rating (Cr) Static Load   Rating (C0r) Maximum Speed   (rpm) Weight (kg)
1200ZZ 10   mm 30   mm 9   mm 6.7   kN 1.7   kN 15,000 0.05
1201ZZ 12   mm 32   mm 10   mm 7.2   kN 2.2   kN 14,000 0.06
1202ZZ 15   mm 35   mm 11   mm 8.5   kN 2.5   kN 13,500 0.07
1203ZZ 17   mm 40   mm 12   mm 10.5   kN 3.0   kN 13,000 0.09
1204ZZ 20   mm 47   mm 14   mm 12.5   kN 4.2   kN 12,000 0.15
1205ZZ 25   mm 52   mm 15   mm 14.8   kN 5.0   kN 11,000 0.18
1206ZZ 30   mm 62   mm 16   mm 19.8   kN 6.4   kN 10,000 0.3
1207ZZ 35   mm 72   mm 17   mm 24.0   kN 7.8   kN 9,500 0.45
1208ZZ 40   mm 80   mm 18   mm 28.0   kN 9.4   kN 8,800 0.6

 

Typical Applications

These bearings are widely used in:

Agricultural Machinery: Ideal for high-dust environments (e.g., seeders, combine harvesters).

Self-Aligning Ball Bearings with Dust Covers (ZZ or 2Z Type) Harvester machinery

Self-Aligning Ball Bearings with Dust Covers (ZZ or 2Z Type) Harvester machinery-001

Textile Equipment: Provides self-alignment and smooth operation in high-speed, low-vibration settings.

Food Processing: Shields maintain hygiene by minimizing particle ingress.

Self-Aligning Ball Bearings with Dust Covers (ZZ or 2Z Type) in Food Food Processing Machinery ~1

Conveyor Systems: Commonly used in industrial belt conveyors.

Self-Aligning Ball Bearings with Dust Covers (ZZ or 2Z Type) for Conveyor

Electric Motors: Suitable for medium-to-low-speed applications with relaxed shaft alignment requirements.

Key Advantages

Self-Aligning Capability: Compensates for mounting errors or shaft deflection.

Dual Metal Shields (ZZ/2Z): Prevent contamination, extending service life.

Reduced Maintenance: Pre-lubricated design minimizes relubrication needs.

High Load Capacity: Double-row construction enhances radial load handling.

Environmental Adaptability: Tolerates minor misalignment and harsh conditions.

Smooth Operation: Low noise and vibration for precision machinery.

FAQ

Q: Are ZZ/2Z bearings waterproof?
A: Shields offer basic dust and light moisture resistance but are not fully waterproof. Avoid submerged use or opt for sealed variants.

Q: Is there a difference between ZZ and 2Z?
A: No—both denote dual metal shields; the labeling varies by manufacturer.

Q: How to select the right model?
A: Consider shaft diameter, load capacity, speed, and operating conditions (e.g., dust, humidity).

Q: Any installation precautions?
A: Ensure clean housing/shaft surfaces, avoid impact mounting, and verify smooth post-installation rotation.

Q: Can shields be removed?
A: No—shields are non-removable. Forcing removal risks damage; use as supplied.

Summary

Combining self-alignment with robust contamination protection, ZZ/2Z bearings excel in long-life, low-maintenance applications. Their sealing and misalignment tolerance make them critical for industrial equipment under demanding conditions.

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