Product Introduction
550W Oil-Free Air Compressor Crankshaft 5.8
550W Oil-Free Air Compressor Eccentric Crank
The Norsun 550W Air Compressor Crankshaft 5.8 is a cast iron eccentric crank component for compatible oil-free air compressor and air-pump assemblies. The supplied engineering information identifies a 14mm motor-shaft installation hole and a 5.8mm eccentric distance. The component uses a circular base plate, a raised shaft hub and an M8 top fastening interface for securing the crank to the motor-shaft assembly.
With an outside diameter of 68.5mm and a total height of 25mm, this crank is designed for compact 550W compressor configurations. The shaft-position height is listed as 13mm, while the base-plate thickness is listed as 12mm. A Φ30mm bearing-seat or step diameter is provided for the relevant bearing interface. For a 6006 bearing arrangement, the standard reference is 30mm inside diameter, 55mm outside diameter and 13mm width; the connecting-rod head matching diameter is listed as Φ55mm.
The 5.8mm eccentric distance is a key fitment value. Buyers should compare the original crank, motor shaft, bearing arrangement, connecting-rod head and fastener position before ordering. Final compatibility should be confirmed against the target pump model and controlled engineering drawing.
1. Cast Iron Construction
The supplied parameter table identifies the main body material as cast iron. The final cast-iron grade, heat-treatment condition and material certificate should be confirmed according to the applicable batch documentation.
2. 14mm Motor-Shaft Installation Hole
The motor-shaft installation hole is listed as Φ14mm. This dimension should be checked against the motor output shaft, key or fastening arrangement and the original crankshaft before installation.
3. 5.8mm Eccentric Distance
The eccentric distance is listed as 5.8mm. This value directly affects the crank mechanism and connecting-rod movement, so it should be confirmed against the removed component and the target compressor pump.
Technical Specifications
| ITEM | DETAILS |
| Type | Air Compressor Crankshaft 5.8 / Eccentric Crank |
| Application | Compatible 550W oil-free air compressors and air pumps |
| Code | 1401641 |
| Material | Cast Iron |
| Details explanation | Circular cast iron eccentric crank with a raised shaft hub, Φ14mm motor-shaft hole and 5.8mm eccentric distance |
| Brand Name | SeaSummer |
| Operating Temp | 60°C to 90°C |
| Delivery Time | 30 Days |
| Packaging | Cardboard packaging |
Products Application
550W Oil-Free Air Compressor Repair
This 5.8 eccentric crank can be evaluated as a replacement component for compatible 550W oil-free air compressor and air-pump assemblies. Before installation, the technician should compare the Φ14mm motor-shaft hole, 5.8mm eccentric distance, Φ68.5mm outside diameter, total height and M8 fastening interface.
Bearing and Connecting-Rod Replacement
The crank can be reviewed together with the bearing and connecting-rod assembly when the original component shows wear, looseness or incorrect crank movement. Buyers should verify whether the target assembly uses 6006, 7006 or 1006 and confirm the bearing-seat, connecting-rod head and axial-position dimensions.
Agricultural Machinery Service Support
Agricultural machinery service teams, repair workshops and aftermarket distributors may evaluate this crank for compatible compact compressor pumps used in equipment maintenance. The original part should be photographed and measured before ordering, especially the motor-shaft hole, eccentric distance, bearing arrangement and fastener position.
Quality and Craftsmanship Details
Products Package
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FAQ
Q: What product is this?
A:It is a 550W oil-free air compressor crankshaft / eccentric crank with a 5.8mm eccentric distance.
Q: Which bearings may be used?
A: The supplied reference lists 6006, 7006 and 1006. The correct bearing should be confirmed for the target pump.
Q: What is the material?
A: The supplied parameter information identifies the main body material as cast iron.
Q: Does Φ30mm mean the 6006 bearing outside diameter?
A: No. In this page, Φ30mm is treated as the crank-side bearing-seat or step reference, while the 6006 outside diameter reference is Φ55mm. Final terminology should be confirmed against the drawing.
Q: Can you provide bulk supply?
A: MOQ, packaging, lead time and repeat-order terms should be confirmed for the requested quantity and destination.
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