Type: Single-row, deep groove ball bearing with metal shield (Z-type)
Model: 6203Z
Material: High-carbon chromium steel (GCr15) or stainless steel (for corrosion resistance)
Shield Type: Z (Metal shield on one side for dust protection)
Dimensions (mm):

• Inner Diameter (d): 17 mm

• Outer Diameter (D): 40 mm

• Width (B): 12 mm

Key Features:

✔ Deep Groove Design – Supports radial and axial loads in both directions.
✔ Metal Shield (Z-type) – Protects against dust and debris while retaining lubrication.
✔ Low Friction & High Speed – Suitable for escalator motor systems and rollers.
✔ Precision-Ground Raceways – Ensures smooth operation and long service life.
✔ Widely Used in Escalators – Found in step wheel assemblies, handrail drives, and gearbox applications.

Common Applications in Escalators:

• Step Wheel Bearings – Supports the rotating steps.

• Handrail Drive Units – Ensures smooth movement of the handrail.

• Motor & Gearbox Bearings – Reduces friction in drive systems.

• Roller Guides – Helps in the smooth motion of escalator components.

Advantages:

✅ Durability – Long-lasting performance under heavy loads.
✅ Maintenance-Free – Shielded design retains grease, reducing maintenance needs.
✅ Interchangeable – Conforms to ISO standards, compatible with most 6203Z bearings.