OPCO Marine Crane
Spare Parts Supplier
Provision cranes, hose handling cranes and deck cranes from Oriental Precision & Engineering of Busan, read from the crane plate, the certificate and the parts list, so each line is tied to the crane that is actually on board.
OPCO cranes behind spare parts enquiries
Oriental Precision & Engineering was founded in Busan in 1980 as Oriental Fitting, took its present name in 1990, and its shares trade on the Korea Exchange. It builds shipboard cranes of several types. Two of them sit closest to the engine department's work: the provision crane that lifts stores and spares aboard and the hose handling crane on tankers; deck cranes for cargo work come next. No public type list ties a model code to each of them, so the crane plate and the parts list carry the identification here. When a heavy spare goes over the side on the provision crane, the weight shift list calculator gives the list the lift puts on the ship from the weight, the outreach, the height to the jib head and the GM from the stability booklet.
Provision crane
OPCO's provision cranes lift ship stores and machinery spares aboard. A provision crane works in short, frequent lifts at the side of the ship, so slewing, hoisting and limit items wear together. Send the crane plate, the SWL plate as it reads and the parts-list page with the item numbers.
Hose handling crane
On tankers the hose handling crane lifts the cargo hoses to and from the manifold. Hook, rope and brake items on such a crane are load-bearing and follow the crane's certificate; hydraulic items are read against the power unit that drives the crane.
Deck crane
OPCO also builds deck cranes for cargo work. A deck crane is quoted from its own plate and parts list; nothing is carried over from a provision crane list on the strength of a similar part name.
Knuckle crane and other types
OPCO also builds knuckle cranes, and its own product list names further crane types. Each is read from its own plate and documents in the same way, with the crane type as written and the drive type stated on the request.
Oriental Precision & Engineering or OPCO on the documents
Both names belong to the same Busan company, and the documents of one crane may use either. Send them exactly as written; the crane type, the serial number and the item numbers decide the part, not the form of the name.
What puts an OPCO crane on the requisition
A shipboard crane works in salt air, often in short cycles with long idle periods between them. The same few patterns bring most requests to the engine room office.
Rope and sheave wear
Broken wires, corrosion or a flattened section on the hoisting rope take it out of service, and worn sheave grooves wear a new rope in turn. Quote the rope from its certificate and send the sheave items with it, so the new rope does not run on a worn groove.
Play and noise in the slewing drive
Rocking of the jib, uneven slewing or noise from the pinion point to the slewing bearing, the pinion or the slewing gearbox. Note what the crew observed, and send the plate of the gearbox and of its hydraulic or electric motor with the crane plate.
Leaks and lost pressure
Cylinder seals, hoses and the hydraulic pump wear with every season of use. A seal kit is read against the cylinder drawing or its marking, and a pump or motor against its own plate, which may be another maker's plate.
A crane that stops short
Limit switches, overload protection and control items stop the crane by design when they fail. Record the alarm or the behaviour and send the item marking with the crane type; these are safety items, so the replacement follows the crane's documentation.
OPCO crane items that appear on RFQ lines
Grouped by crane function. Naming the function on each line helps more than a long description of the part.
- Wire ropes for hoisting and luffing, against the rope certificate
- Sheaves, sheave bearings and hook block items
- Hooks and hook safety latches, against the crane's documentation
- Hoisting winch brake and slewing brake parts, including linings and release units
- Slewing bearing, pinion and slewing gearbox items
- Hydraulic pumps and motors, read from their own plates
- Cylinder seal kits, hydraulic hoses and filter elements
- Limit switches and overload protection items
- Electric motors, contactors and control panel items
Reading an OPCO crane plate and its documents
A crane part is quoted from what is written on the crane, on its components and in its certificates. With these items the request can be priced without anyone guessing a rope, a brake or a motor:
- Crane type and serial number exactly as stamped on the crane plate, and the maker name as written there
- The SWL plate as it reads on the crane: a photograph is enough, the figures are taken from it and not from a brochure
- Plate of the hydraulic power unit and of the electric motor that drives it
- The wire rope certificate; the wire rope designation reader decodes the construction written on it
- Item numbers and the parts-list or drawing number from the OPCO manual
- Plates or markings of the brake, the slewing gearbox, the hydraulic motor and the limit switch concerned
- Photographs of the crane plate, the removed part and the part in place
- The delivery port for the parts
How an OPCO crane request is worked
Each line is reviewed as a genuine part or a checked alternative, and the route is confirmed before the quote. For a crane that review starts from the crane plate and the certificate, because many of the parts that matter are load-bearing.
Load-bearing items follow the certificate
Wire ropes, hooks, sheaves and brakes are load-bearing and are matched to the crane's documentation and certificate; limit switches and overload protection follow the same documents as safety items. No substitute is proposed for these from a photograph alone; if a marking cannot be read, the crane type, the serial number and the item number lead back to the right part.
Components with their own plates
A hydraulic pump or motor, a slewing gearbox, a brake or an electric motor on a crane may carry its own maker's plate. Each is read from that plate, tied to the crane by the crane plate, and quoted as a genuine part or a checked alternative for that component.
Standard items on a checked path
Seal kits, hydraulic hoses, filter elements and bearings may be catalogue items behind an OPCO item number. Where the owner accepts it, these go on a checked alternative path once size, material and pressure class are confirmed from the parts list or the removed part.
One crane, one group of lines
Hoisting, slewing, hydraulics and controls are read as groups. The parts for a hoisting overhaul then arrive together, rope, sheaves and brake items alike, rather than one item short before the next survey.
OPCO crane parts — questions from chief engineers
The plate says Oriental Precision & Engineering, the manual says OPCO. Is it the same maker?
Yes. OPCO is the short form of Oriental Precision & Engineering Co., Ltd. of Busan, and the company's own web address uses it. Send both as they are written, with the crane type and serial number; the identification rests on those, not on the form of the name.
Can a wire rope be quoted from the diameter of the old one?
No. A crane rope is load-bearing and is quoted from the rope certificate: construction, grade, lay and end fittings as listed there, read against the crane's documentation. The wire rope designation reader helps to read the construction, but the certificate fixes the line.
The hydraulic motor on the slewing drive carries another maker's plate. Which plate do I send?
Both. The crane plate shows which crane the motor belongs to, and the motor plate shows what the motor is. Where a component carries its own maker's plate, the part is quoted against that plate, read together with the crane plate.
Will the SWL of my crane be printed on the quote?
No figures are published or assumed here. The SWL plate is read as it is on the crane, and the rope, hook and brake lines are checked against the crane's documentation and certificate, not against a brochure value.
The limit switch marking is gone. Can a similar one be fitted?
A limit switch is a safety item, so it is not swapped for a look-alike from a photograph. The crane type, serial number and the item number in the parts list lead back to the listed switch; send the circuit drawing reference if the parts list is missing.
Is Vessel Core connected to OPCO?
No, and there is no agreement of any kind. Vessel Core holds no distribution, representation or partnership agreement with OPCO, and quoting a component against one of its designations implies no approval by the maker and no claim of interchangeability.
Start with the crane plate.
Send the crane type and serial number as they read on the plate, a photograph of the SWL plate, the power unit and motor plates, the rope certificate and the item numbers from the parts list. Each line is tied to the crane function it belongs to before a part reference is fixed against it.
