Custom Crane Sheave: Made-to-Drawing Delivery for an Indonesian Shipyard

Need a custom crane sheave machined to your drawing? A recent order for an Indonesian shipyard shows how made-to-drawing production works. Follow it from drawing review to final inspection and export packing. Here is what that delivery looked like.

Why Shipyards Order Custom Crane Sheaves

Shipyard cranes work in salt air, tight spaces, and continuous duty. Catalog sheaves often do not fit an existing block, a specific rope, or a tight reeving layout. That is when you order a sheave made to your drawing.

A custom crane sheave is machined from your dimensions. Groove profile, pitch diameter, bore, and flange width all come from your drawing. The supplier does not redesign your block. The supplier makes the part your crane needs. That avoids rework at installation and keeps downtime short.

What You Send to Start a Made-to-Drawing Order

The supplier needs clear, complete information before cutting steel. On this order, the shipyard sent a technical drawing with the key dimensions marked. The drawing showed the sheave and its matching bushing. If you are about to send a drawing, include:

• Sheave pitch diameter and rope diameter
• Groove profile (radius, angle, depth)
• Bore diameter and bushing fit
• Hub width and flange style
• Bearing type and shaft fit
• Material grade and surface treatment

Send photos of the old sheave and your block when you can. Photos show the wear pattern and the space you have. The more detail you give, the faster the quote.

From Raw Machining to Finished Coating

Before painting, the sheave stayed in raw machined steel. You could see the groove, the machined bore, and the welded reinforcement on the web. The copper bushing sat in the hub, ready for final inspection.

After inspection, the sheave received its finish coating. The painted sheave shows the final look: red paint on the web, an open machined groove, and the copper bushing in the bore. The groove stayed unpainted. That keeps the rope contact surface true.

Inspection Before Packing: What We Check

On 8 October, every sheave in this order went through final inspection in the factory. A made-to-drawing part earns its value only if it matches the drawing and runs true in the block. Worn grooves and damaged flanges are the failure modes that stop a sheave, so the inspection starts there. Our inspectors checked:

• Groove profile against the drawing — radius and depth match your rope
• Bore and bushing fit — the bushing bore is measured with a dial bore gauge
• Flange condition — no cracks, no burrs, correct thickness
• Surface finish — machined surfaces clean, no scoring
• Material verification — grade confirms to the drawing and requested checks

The bushing bore was measured with a dial bore gauge. The reading was recorded on the inspection sheet. The groove was checked with an electronic measuring instrument. These checks protect the fit at installation.

Packing and Dispatch on 12 October

On 12 October, the inspected sheaves were packed for dispatch. Packing matters as much as machining. Sheaves travel across the sea to Indonesia. Impact, moisture, and handling can all damage an open groove.

Each sheave was wrapped and secured in a wooden case. Wooden supports stopped movement in transport. The bore and groove surfaces stayed protected. The packing list matched the drawing quantities. When the parts arrive, the buyer can unpack, check, and install without rework.

Why a Custom Crane Sheave Is Worth the Lead Time

A made-to-drawing sheave takes more lead time than a stocked part. For a shipyard, the fit is worth it. A sheave matched to your rope and block reduces rope wear and keeps hoisting smooth. It also avoids the cost of a wrong part later.

Ordering custom parts is not a guess. The drawing, the inspection record, and the packing list give traceability. You know what was made and how it was checked. When a worn sheave reaches the wear limits for replacement, a custom part keeps your block in service without reworking the fit.

How to Order a Custom Crane Sheave from Your Drawing

To order, send your drawing and the details above to our sales team. We review the drawing, confirm the process, and give you a lead time. Before shipment, every sheave is inspected against your drawing. The inspection record is kept and available on request.

We supply custom crane sheaves to shipyards, steel plants, and equipment makers. Every order follows the same made-to-drawing process that delivered this Indonesian order. Send your drawing to start.

자주 묻는 질문

Final Thoughts

A custom crane sheave for a shipyard starts with your drawing and ends with a part you can install. From inspection on 8 October to packing on 12 October, this order moved through controlled steps. Send your drawing to start your custom crane sheave order.