Analytical Instrumentation

  • New high frequency reciprocating rig

New high frequency reciprocating rig

Jan 17 2020 Read 459 Times

Koehler Instrument Company, Inc recently introduced their newly redesigned High Frequency Reciprocating Rig. This instrument can be used for the evaluation of the lubricity of diesel fuels utilising a high frequency reciprocating rig (HFRR). A 2-mL test specimen of fuel is placed in the test reservoir and maintained at 25 or 60°C. At the point of temperature stabilisation, a vibrating arm, wielding a non-rotating steel ball and loaded with a 200-g mass, subsequently descends until it makes contact with a test disk entirely submerged in the fuel. A 1-mm stroke, at a frequency of 50 Hz for 75 minutes, is the catalyst which causes the ball to rub against the disk. The ball is then removed from the vibrating arm and cleansed. The dimensions of the major and minor axes of the wear scar are measured under magnification and recorded.

The specifications include the following: it conforms to ASTM D6079, D7688; ISO 12156; IP 450; EN 590; CEC F-06-S.  The HFRR has a variable frequency ranging from 10 Hz to 200 Hz via software (K9346X Model). Wear scar measurement occurs through a digital microscope and software. The instrument features real time data acquisition of frictional force, temperature and humidity (K9346X Model). Programmed test sequences to facilitate automated examination are included. PC-based digital and data acquisition is featured as well (K9346X Model).  In addition, the user can rely on proven repeatability and reproducibility of empirical data from the sturdily built and dependable table top rig.

The versatility of the high frequency reciprocating rig is found in a computerized piece of equipment adept at accurate detection of frictional behavior and the wear properties of materials under both dry and lubricated conditions. Reciprocation motion takes place employing the fixed stationary counter surface materials, mounted on a small lubricant bath, and the reciprocating specimen (ball) frequency, displacement and normal load, chosen based on individual test requirements.

Reader comments

Do you like or dislike what you have read? Why not post a comment to tell others / the manufacturer and our Editor what you think. To leave comments please complete the form below. Providing the content is approved, your comment will be on screen in less than 24 hours. Leaving comments on product information and articles can assist with future editorial and article content. Post questions, thoughts or simply whether you like the content.

Post a Comment

Digital Edition

Petro Industry News Buyers Guide 2020

January 2020

In This Edition Fuel For Thought - Successful JASIS sees Tanaka announce appointment of new general manager - USA appointments underpin Signal Group growth plan - Leading European sensor tr...

View all digital editions



Mar 01 2020 Chicago, IK, USA


Mar 04 2020 Beijing, China

SynGas 2020

Mar 09 2020 Memphis, TN, USA


Mar 09 2020 Muscat, Oman

StocExpo Europe

Mar 10 2020 Rotterdam, The Netherlands

View all events