216-4457 2164457 Small gear seal of 420 428D 416D

1. Quick Details of  seal 216-4457:

2. 216-4457  picture:

3. Service part number :

4. FAQ

Q: Can this oil seal work steadily on rotating shaft assemblies?
A: Yes, the specially designed sealing lip fits rotary shafts to block internal lubricant leakage.

Q: What practical effect will this seal bring on earth‑moving construction sites?
A: It keeps gear lubricant sealed inside swing gearbox chamber, and blocks construction‑site fine dust, sticky mud and splashing water from entering internal gear and bearing assemblies.

Q: Can this seal cope with frequent swing rotation and continuous mechanical vibration?
A: HNBR rubber maintains stable resilience under recurring twisting vibration, electrophoretic coating protects metal shell against rust under humid outdoor operating environment.

Q: Are these oil seal kits made according to standard installation dimensional specifications?
A: Each full kit is precision sized to match standard swing gearbox housing bore dimensions for excavator assemblies.

Q: Will frequent clockwise and counter‑clockwise swing movement wear sealing lip quickly?
A: Optimized lip contact angle reduces running friction torque, slowing lip abrasion under bidirectional intermittent rotary cycles.

Q: What damage should we avoid for electrophoretic shell during handling?
A: Prevent sharp objects scratching coating surface; once protective layer peels off, bare steel will rust gradually and cause seal displacement.

Q: What should we watch out for regarding the galvanized shell during installation?
A: Avoid hammering directly on local position; scratch on galvanized coating will lead to rust formation in later service period.

Q: How well can this full sealing kit block mud, gravel dust and hot gear oil mist on muddy outdoor road job sites?
A: The multi-layer flexible rubber lip scrapes thick mud off the shaft surface, the fully enclosed plated metal shell blocks coarse dust particles, and inner auxiliary rubber layers isolate high-temperature oil mist to protect internal precision gears.

5. Exhibition and Wearhous

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