Laser downtime is costly and production expenses can pile up fast while you wait for your blower to be replaced.
- We remanufacture Oerlikon Leybold blowers (WSLF 1001 and 2001 models) to the tightest specifications, so they will run "like new". These are used throughout the laser metals industry.
- For complete remanufacturing, each pump is disassembled, inspected, and cleaned in an alkaline hot tank, with materials disposed per regulatory guidelines.
- If the blower has "crashed" we strip and replate the cylinder, headplates, and impellers as necessary, using electroless nickel. Critical bearing bores and dowel pin holes are carefully masked to prevent nickel buildup. The rotor neck is resleeved if there is excessive wear on the inner race contact surface. The original rotor balance weights are not disturbed.
- All new piston rings are used on reassembly. We install the bearings and rotor using special pusher tooling. Bearings are not "hammered home" with a driving tool. We use NSK bearings that we believe are better than the SNR OEM bearings. The motor adapter bearing bore is indicated and re-dowelled to less than 0.001" TIR. This insures that the three bearings on the drive impeller are coaxial. Rotor run out is held to less than 0.001" TIR also.
- A 24 hour run-in follows using air at 70 torr. Every blower receives a helium leak check/diagnosis then an accelerometer probe is attached for a Fast Fourier Transform (FFT) vibration analysis.
Pictured on the right (dark Grey ribbed casting) is the heat exchanger that removes the heat of compression from the system. The air recirculates back into the inlet of the blower through the flexible hoses. Our test runs for 24 hours with the two-pole canned motor running at 85HZ to give 5100 RPM at the blower. The canned motor eliminates troublesome shaft seals.
Shown on the left is a plot of vibration at RPM on one of the refurbished blowers. Blowers are individually tuned to minimize vibration for long life. In order to pass the vibration test a pump must have </= 0.12 inches/second as analyzed by our Fast Fourier Transform (FFT) Diagnostic equipment. We run our break in test using air at 70 torr, (100 hectopascals), to closely approximate conditions in the laser.
We have many demanding customers and their blowers are vital to their lasers running efficiently, with low cost of ownership. A precision quality MHV remanufactured blower can add years to a laser's life at a value price point. You'll find our pricing is typically lower than OEM's. You will find our turnaround time and attention to your specific needs of great value to your business and will provide you confidence to know we will deliver what we promise.