Rotor Repairs Services

Each rotor repair starts with an inspection, involving complete assessment of the condition of the Rotor. ROKADE Group ensures that Repair jobs are carried out using best techniques to give long and trouble service.

Rotating Equipment Inspection and Repairs

We undertake turnkey projects for rotary equipment right from Condition Monitoring / Analysis to complete repairs / refurbishment / replacement of parts till final Vibration test to assess the final results.

Also we are involved in all types of repairs activities for various Rotors range, which consists of the basic process like fabrication of damaged Mechanical Repair, rebuilt hard facing, stellate welding and machining of other equipment components and special assignments as repairing rotary machinery, building up Shafts for re-machining and reconstructing damages weldments etc.

Rotating Equipment Inspection and Repairs

Our Rotor Repair Services

Marine Propeller Repair Services

Marine Propeller Repair Services

Marine propellers are designed and manufactured to ensure the highest possible levels of performance and efficiency.

Cryogenic Pumps Repair Services

We have expertise in repairs of Cryogenic Pumps of EBARA INTERNATIONAL CORPORATION Cryodynamics Division...

WFE Entrainment Separators (Wiped Filmed Evaporators) Repairs

 WFE Entrainment Separators (Wiped Filmed Evaporators) Repairs

We are specialized in repairs and maintenance of all the major WFE manufacturer in market. The Wiped

Centrifugal Compressor Rotor Repairs

entrifugal Compressor Rotor Repairs

We are specialized in repairs of Centrifugal Compressor Rotors for leading OEM’s such IHI Compressors, etc.

Repairing & dynamic balancing of 24mw pelton runner

Repairing & dynamic balancing of 24mw pelton runner

A Pelton turbine or Pelton runner is a type of hydro turbine (specifically an impulse turbine) used frequently...

Repair & dynamic balancing of engine crankshaft

A crankshaft is a shaft driven by a crank mechanism, consisting of a series of cranks and crankpins to which the connecting rods of an engine is attached.

Repair and Dynamic Balancing of IHI Lance Compressor Pinion Shaft Assembly

Centrifugal compressors, sometimes called radial compressors, are a sub-class of dynamic axisymmetric work-absorbing...

Repair and Dynamic Balancing of IHI Lance Compressor Rotor Assembly

Centrifugal compressors, sometimes called radial compressors, are a sub-class of dynamic axisymmetric work-absorbing...

Dynamic Balancing of Compressor Crankshaft

A Compressor Crankshaft is a shaft driven by a crank mechanism, consisting of a series of cranks and crankpins to which the...

Dynamic Balancing of Mud Pump Crankshafts

Mud Pump is one of the most critical equipment on the Rig; Powerful Mud Pumps pick up mud from the suction tank and circulate the mud down...

Rotor Repairs as per API RP 687 Standard

This recommended practice covers the minimum requirements for the inspection and repair of special purpose rotating equipment rotors, bearings and couplings used in petroleum, chemical, marine, steel, power plant and Refinery & gas industry services etc.

Returning these dimensions to the latest design fits and clearances will allow the repair

Returning these dimensions to the latest design fits and clearances will allow the repair to

a) Maintain interchangeability with other units.

b) Use existing spare parts.

c) Eliminate errors in manufacturing future spare parts that could be caused by undocumented dimensional changes.

d) Maintain its critical speed margins and torque transmission capabilities.

Notes:

1. Small bearing clearance changes can move rotor critical speeds and changes in shrink fits can adversely affect rotor dynamics.

2. The latest design fits and clearances may not be as originally designed by the original equipment manufacturer (OEM), since rerates and/or upgrades may have been incorporated into the machine design.

General practice followed

Visual inspection

Mechanical & Electrical Run out

Rotor cleaning (glass bead blasting)

Non-Destructive Testing

Reporting & repair proposal

Depending on the condition of the rotor, the following may be included in the rotor repair:

Impeller spin test

Rotor journal repairs by welding, laser cladding or HVOF coating

Spare parts: manufacturing of new impellers, shafts, blades, diaphragms, blade carriers, etc.

Coating application on compressor impellers for corrosion protection, reduction of fouling rates and a smooth surface, resulting in an increased efficiency

Re-blading.

Re-placement of seal strips

Low speed balancing

High speed balancing

Over speed test

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Other Services

Dynamic Balancing

Dynamic Balancing

Dynamic balancing is a way of balancing machines by rotating parts quickly and measuring the imbalance. The imbalance measured can then be corrected

Vibration Analysis Services

Vibration Analysis

Vibration Analysis is the most predominant technique for Detecting, Monitoring & Analyzing the vibration levels and frequencies of industrial machinery

In Situ Balancing

In Situ Balancing

In-situ balancing is the process of balancing a rotor in its own bearings and support structure, in assembled conditions. Our specialised in-situ balancing