8pcs Bottom Roller Fits John Deere 27D Excavator - Heavy Duty Undercarriage
Model: John Deere 27D. Part Type: Bottom Roller. Yield strength σ0.2 (MPa):≥310. Roller, 45# carbon steel or 40Cr, quenched HRC25-30, surface quenched HRC52-58, hardened to a depth of 2-3mm. Exhaust Head Pipe.