Request a Quote (800) 878-5828 (724) 898-3000 Resources Home Products Industry Parts/Services Company Resources Blog September 16, 2016 PULVA CORP. Begins Offering Single-Piece Replacement Rotors for its Line of Pulverizers All advertisements in PDF format. Parts & Equipment Ad as seen in Powder and Bulk Solids To come. Function Drives Design Partnering for Cost Reduction Partnering for Cost Reduction Late in 2017 Pulva Corporation was requested to attend a customer initiated “Grinder Improvement Meeting”. During the meeting the customer presented Pulva engineering and sales with data from component break in periods and component life cycle. At the time component life was 19 continuous days of operation. The component life cycle was determined by particle size output from the grinder. Once particle size grew to an unacceptable oversize condition all major grinder contact parts were changed regardless of wear amount. The customer emphasized that multiple shutdowns per planned running cycle was not favorable and that it proved more cost effective for scheduled outages at predetermined times. At that time 450 hours of operation (19 days) was the set bench mark. Pulva immediately recognized 2 potential issues. One with the lid liner while the other was with the screen. Screen modifications were trialed first. The break in period for the grinder definitely stabilized with the screen modifications. Next lid liners were trialed and a smooth liner was determined to potentially yield longer life. After multiple individual trials (screen and lid liner) it was determined that the results were promising enough to trial both components together. The cumulative trial resulted in 29 days (700 hours) of continuous operation! Using prior project success the customer suggested a change in materials used for construction. Once again Pulva manufactured test screens and lid liners from the advanced material suggested by the customer. Currently it has been determined that the life cycle has improved to over 41 days (1000 hours). The customer reports: “we have achieved a first: over 1000 hours of operation at near maximum rates. This is a great accomplishment, and it is the gold standard right now”. Dialogue continues into 2021. New potential cost savings issues are being discussed. The focus has been extending the time between shutdowns. It will likely change to shortening the amount of time to execute a changeover. Contact Pulva today with your component issues. Put our team to work for your bottom line! Pulva Keeps You Running in Uncertain Times Maintenance Issue: Purchasing the Correct Bearing The heart of every hammer mill is the rotating assembly or rotor. Often spinning at 21,000 feet per minute, the rotor requires periodic maintenance. A crucial item in rotor maintenance is the bearings. When replacing bearings it is extremely critical that you directly replace a bearing’s class of fit and material of construction. Bearing suppliers have been known to substitute steel cage bearings for the Pulva recommended brass caged bearings. Even though steel caged bearings technically fit the application, Pulva customers have seen them fail in just a few hours. If you aren’t sure what bearing your hammer mill rotor requires, click here for a quote . You might be surprised at how competitive Pulva’s bearing prices are. Here’s a quick cross reference guide for Pulva bearing part numbers: Bearing Housings Designed for Easy Sanitization A customer recently approached Pulva Corporation about cleaning and sanitizing issues they were having on their cosmetic manufacturing hammer mill. They were experiencing significant down time while carrying out cleaning tasks. Several areas were discussed and it was decided that the bearing housings would be addressed first. The cleaning agent contained ingredients that removed paint and rusted traditional bearing housing materials like cast iron. The cast housings also had an irregular surface that made wipe downs time consuming. A 316 stainless bearing housing was requested and Pulva delivered a modular designed billet (made from solid material rather than a traditional casting) 316 stainless bearing housing. The housings were designed with smooth and accessible surfaces. Surface cleaning time was reduced and cosmetic manufacturing time increased because of the smoothness of the housings. The housings can be applied in food and pharmaceutical industries as well. Pulva is currently planning the next project and asks for customer input. What are your hammer mill cleaning issues? In what areas do you experience downtime due to inaccessible or hard to clean surfaces? Rotor assemblies Gearbox and drive assemblies Main body housing Main cover housing with deflector liner Mill support frame Others email: sales@pulva.com Please feel free to provide your input on the next cleaning and sanitizing project. Currently Pulva is focusing on the Model B hammer mill and #2 micro pulverizer. Other models will be addressed as requested. Show More sales@pulva.com tech@pulva.com 800-878-5828 724-898-3000 724-898-3192 P.O. Box 427 Saxonburg, PA 16056 105 Industrial Drive West Valencia, PA 16059 Get a Quote Contact Info Phone: (800) 878-5828 / (724) 898-3000 Address: 105 Industrial Drive, West Valencia, PA 16059 Email: sales@pulva.com © Copyright 2019 | All Rights Reserved | Pulva