Features:
- Steel structure with built-in wheel, bumpers and bumper plates.
- Alloy steel wheels of JIS-S45C for EC-125 ~ EC-250, and JIS-SC45 for EC-320 ~ EC-500.
- Wheel is flange guide surface hardness HrC 42 ~ 48.
- Drive shaft is alloy steel.
- Long life anti-friction bearings and grease-lubricated.
- Bearing house of spherical graphite cast iron.
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