SP-77 STEEL SLEEVE INGCO (RH150028) D-73

🧰 What It Is

The steel sleeve is a cylindrical metal lining used inside the internal mechanism of the rotary hammer. It acts as a bearing surface, spacer, or guide for a shaft, pin, or moving part. Sleeves are often used where rotating or sliding motion occurs to reduce wear on more expensive structural components.

⚙️ Technical Function

The SP‑77 Steel Sleeve typically provides one or more of the following roles:

1. Bearing/Guide Surface

• Forms a smooth, hardened surface for a shaft or pin to rotate or slide in

• Reduces direct metal‑to‑metal contact

2. Wear Protection

• Protects housings or shafts from wear

• Can be replaced when worn, preserving the lifetime of other parts

3. Alignment and Support

• Keeps moving parts properly aligned

• Supports the shaft or pin under load and vibration

4. Load Distribution

• Helps distribute forces over a larger area to prevent localized stress