Long Service Life Graphite copper sleeve JDB 4*8*22 Port machinery bushing

Long Service Life Graphite copper sleeve JDB 4*8*22 Port machinery bushing

The JDB4*8*22 graphite copper sleeve is turned from high-lead brass and fitted with graphite plugs covering roughly a quarter of the sliding surface. This ratio is enough to keep friction low under boundary lubrication without weakening the bronze matrix that carries the shock loads typical of Port machinery.

Specifications of JDB4*8*22 graphite copper sleeve

Why the JDB4*8*22 bush fits Port machinery joints

• Self-lubricating graphite plugs reduce dependence on manual greasing
• Brass alloy matrix with high load capacity and good heat conduction
• Low and stable friction coefficient under boundary lubrication
• Resists seizure during start-stop and oscillating motion
• Ground bore and controlled wall thickness for a reliable press fit
• Suitable for dusty, wet and high-temperature working conditions

Ordering information

The JDB4*8*22 sleeve is stocked for immediate shipment and can also be produced to your drawing with modified bore, length, flange or lubrication hole pattern. Send us the shaft and housing dimensions of your Port machinery joint and we will confirm the closest standard size.

FAQ

Q1: What is the MOQ? A1: 10 pcs per model for stock sizes.

Q2: Can the size be customized? A2: Yes, bore, length, flange and oil groove can be produced to your drawing.

Q3: Which payment terms are accepted? A3: T/T, Western Union, Paypal and L/C.

Q4: How fast is delivery? A4: Stock sizes ship within 3-7 days after payment.

Q5: Are samples available? A5: Yes, sample orders are welcome for fitting tests.