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Lubricating tablet presses application

Lubricants are used in the tablet press application to reduce the compression force during tableting, to avoid product build up on the tablet press tools and to make the tablet surface smooth. There are a few requirements that the lubricants need to have for the tablet press application.

  • FDA-compliant
  • NSF H1 registered
  • Certified according to NSF ISO 21469-Halal-Kosher
  • Good wear protection
  • No blackening of bronze guides and therefore no contamination with dark particles
  • Tested compatibility with elastomer seals on scrapers
  • OEM approval
Application Product Technical Data Description and benefits

Tablet punch and bronze guides

Klüberpharma UH1 4-220
Klüberpharma UH1 4-460

ISO VG 220, 460 acc. to DIN 51519

NSF H1, ISO 21469 compliant with FDA 21 CFR 178.3570

Service temperature range: −15 to 110 °C
  • Compatible with bronze. No blackening of bronze guides and therefore, no contamination with dark particles for reduced reject numbers

Blistering packaging

BARRIERTA L55/2

NLGI grades 0, 1, 2 and 3 acc. to
DIN 51818

NSF H1, ISO 21469 compliant with FDA 21 CFR 178.3570

Service temperature range NLGI 0, 1, 2:
−40 °C to 260 °C, NLGI 3: −30 °C to 260 °C
  • Long-term grease with excellent resistance to high temperature and aggressive media
  • Compatible with plastics and elastomers
  • Long-term stability and high purity level

Successful Case Study - Tablet Press

How can the lifetime of punches (pressing tools) be improved?

One of Europe’s leading providers of Contract Manufacturing to the Pharmaceutical and Health & Beauty industry, manufacture, pack and ship over 770 million packs per annum. Their business objective is to reduce wear on the punches of presses.

The right oil viscosity is the key! High surface pressure in the punch head/thrust roller friction points would normally require a high oil viscosity. As the oil is also in the punch fit, wear in the fit may increase after the pressing procedure. Hence, medium oil viscosity should therefore be preferred. The solution provided by Klüber Lubrication for medium viscosities oil was Klüberpharma UH1 4-220 and Klüberpharma UH1 4-460 which have shown to achieve the best results in most applications.

The outcome after switching to Klüberpharma UH1 4-220 and Klüberpharma UH1 4-460, was less wear on the punch head can be observed. These lubricating oils offer good wear protection, thus extending the service life of components, as confirmed by oscillation friction wear tests according to DIN E 51834. 

Overall benefits and values:

  • Less wear on the punch heads compared to a relatively lower viscosity oil such as ISO VG 68, therefore longer lifetime of the punches
  • Reduction of number of lubricants (one oil for punch lubrication)
  • Higher product safety due to NSF H1 registration and NSF ISO certification
  • Countered black spot issue on steel punch-bronze guide setup of tablet presses

Successful Case Study - Blistering Packaging

One of the top 10 largest Russian pharmaceutical manufacturer in Saint Petersburg finds solution for open linear bearing of blistering machine with BARRIERTA L 55/2.

Business issue:
They faced contamination by metal foil particles, colour and consistency changes and the need for several relubrication and maintenance per month with the existing lubricant they are using. 

Hence, their business objective is to reduce risk of final product contamination by metal particles and to decrease maintenance time.

The solution provided by Klüber Lubrication showed satisfying results. Since switching to BARRIERTA L55/2, there is no need for any maintenance the entire year. The risk of final product contamination both by lubricants and maintenance personal was absolutely excluded. PFPE products is seen to be the best solution for lubrication points exposed to metal (or other nature) dust due to lowest surface tension of PFPE oils. Reducing wear particels is the most important aspects in pharmaceutical clean rooms.

Overall benefits and values:

  • Extended relubrication intervals
  • No contamination of bearing by metal foil dust
  • No cleaning needed for one year period
  • No risk of contamination of products
  • Reduced wear particles due to the use of BARRIERTA L 55/2 as the application is operating in a pharmaceutical clean room

Your benefits at a glance

  • Wear protection of punches 
    The right oil viscosity is key. High surface pressure in the friction point punch head/thrust roller would normally require a high oil viscosity. As the oil is also in the punch fit, wear in the fit may increase after the pressing procedure. Hence, medium oil viscosity is preferred. The medium viscosities of Klüberpharma UH1 4-220 and Klüberpharma UH1 4-460 have shown the best results in most applications.
     
  • Scraper - Elastomer compatibility
    When the scraper is lubricated, the scraper seal comes in contact with the lubricating oil. Incompatibility may cause swelling of the o-ring, which in turn leads to wear in the fit.  Klüberpharma UH1 4-220 and -460 have been tested for compatibility with scraper seals from Freudenberg Process Seals.
     
  • OEM recommendations
    Klüberpharma UH1 4-220 and -460 have been tested, approved and included in the lubrication charts of well-known OEMs.

 

Get in touch

We look forward to receive your message!

  • MY Contact

    Klüber Lubrication (Malaysia) Sdn Bhd (199701013009)

    Unit 3-5, Level 3, Tower 9, UOA Business Park
    No. 1, Jalan Pengaturcara U1/51A
    40150 Shah Alam, Selangor
    Malaysia

    Email: sales@my.klueber.com

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