Sany Original Chain Plate Nut LM216M22B Grade 12.9, blackened surface. Sany material code: 60110071. Suitable for multiple machine models.

Sany Original Chain Plate Nut LM216M22B (Grade 12.9 | Black Oxide)
Material Code: 60110071
I. Model Analysis
- LM216: Compatible with 216-pitch track chain (e.g., SY215/SY335)
- M22: M22×2.5 thread,配套 with bolt 60088076
- B: Square nut (track plate专用, not hexagonal)
- Grade 12.9: Ultra-high strength, tensile strength ≥1220MPa, hardness HRC39–44
II. Key Parameters
- Material: 42CrMo alloy steel, forged + heat treated
- Surface: Black oxide (phosphated), rust-resistant and mud-proof
- Shape: Thickened square, diagonal ≈30mm, thickness ≈20mm
- Compatibility:
- Track plate: DB216-600×13 (60053662)
- Track chain: STC216MH (13914437)
- Machine models: Sany 20–36 ton excavator full series
III. Comparative Advantages (Grade 12.9 vs Grade 10.9)
- Higher strength: Impact-resistant and crack-proof, safer for heavy-duty mining applications
- Better anti-loosening: Square contact surface fits the recess, less prone to loosening under vibration
- Longer service life: Wear and corrosion-resistant, reducing post-installation maintenance
IV. Matching Information
- Matching bolt: 60088076 (LS216M22CGB3098.1)
- Quantity per plate: 6 pieces
- Recommended torque: 300–340N·m (slightly higher than Grade 10.9)