Development and Assessment of Cracking and Sorting Processes of Palm Kernel Nut Machine


  •   A. J. Bakri

  •   T. B. Ajayi

  •   K. O. Oladerin

  •   A. O. Mogbojuri


This paper presents a research on the Development and Assessment of the cracking and sorting processes of palm kernels nuts in a mechanical cracking machine. The palm kernel oil is an important agricultural produce, it has a wide range of usage aside from cooking. In attempt to reduce energy exploitation, in conjunction with the regular high rate of demand for products been extracted from palm kernel nut, the need to improve on the manual method of cracking and sorting became eminent. The mechanical cracker was made up of two units: the cracking and sorting unit. Experimental studies of properties of machine components were considered with the purpose of avoiding fatigue failure and fracture on the palm nuts during the processing duration. The mechanical cracker was designed, fabricated and performance evaluation carried out using locally sourced materials. It was developed with a 5hp electric motor to drive the machine coupled with belts and pulleys. The average data assessment shows a 2.01% of un-cracked nuts, 2.36% of partially cracked nuts, 93.58% of un-cracked nut and 2.05% broken nuts. The cracking-sorting efficiency was estimated at 94% and throughput capacity was determined to be 80kg/h while the overall palm kernel recovery efficiency was 85%. These suggest that the machine is very suitable for separating the palm kernel nuts from the cracked shells clearly and completely.

Keywords: Palm kernel, Cracking, Sorting, Efficiency, Feed rate


Ibikunle R. I. and Ismail S. O., (2018) Design and Development of an improved palm kernel shelling and sorting machine. Research Gate Journals.

The Tropical Agriculturalist (1989). Oil palm (1st Edition). Macmillian Education Limited, London, 152p.

Stephen, K. A. & Emmanuel, S. (2009). Modification in the design of already existing palm nut fiber separator. African Journal of Environmental Science and Technology, 3 (11), 387- 398.

Adebayo A.A (2004) Development and Performance Evaluation of a motorized palm-nut cracking machine. Proceedings of the Annual Conference of the Nigerian Institution of Agricultural Engineers, 26, 326-330.

Emeka V. E and Olomu J.M (2007). Nutritional evaluation of palm kernel meal types: proximatecomposition and metabolizable energy values. African Journal of Biotechnology, 6(21), 2484-2486.

Ismail S. O., Ojolo S. J., Orisaleye J. I., Adediran, A. A., and Fajuyitan, O. O. (2015) Design and development of an improved palm kernel shelling and sorting machine.

Oke, P.K (2007). Development and Performance Evaluation of Indigenous Palm Kernel Dual Processing Machine. Journal of Engineering and Applied Science; 2(2):701-705.

Antia O. and Aluyor E. (2018). Estimation of speed required for palm nut shell mass-sizeparticle reduction operation to enhance whole kernel separation. International Journal of Scientific and Technical Research in Engineering (IJSTRE), 3 (2), 1-11.

Sitkei, G. Y. 1986. Development in agricultural engineering. Mechanics of agricultural materials. Amsterdam: Elsevier Science Publisher.

Sarka B.K. Theory of Machines. Tata McGraw-Hill Publishing Company Ltd. New Delhi, 2002. Pp. 44-65.

Khurmi R.S, Gupta J.K. Textbook of machine Design. First multicolour Edition, Eurasia Publishing House (PVT) Ltd. Ram Nagar, New Delhi- 110 055, Indian, 2006.

Shigley J. E., Budynas R. G and Nisbeth J.K (2010) Mechanical Engineering Design. (9th Ed.). New York: McGraw Hill, (Chapter 7).

Gbadamosi L. (2006) Engineering properties of palm kernel seeds. Journal of Agricultural Engineering and Technology, 14, 58 – 67. European International Journal of Science and Technology ISSN: 2304-9693

Ojolo S. J., Damisa O., Orisaleye, J. I., and Ogbonnaya C. (2010) Design and development of Cashew nut shelling machine. Journal of Agricultural Engineering and Technology, 8, 146-157.

Redford G.D (1973) Mechanical Engineering Design, Macmillan Press, London.


Download data is not yet available.


How to Cite
Bakri, A.J., Ajayi, T.B., Oladerin, K.O. and Mogbojuri, A.O. 2020. Development and Assessment of Cracking and Sorting Processes of Palm Kernel Nut Machine. European Journal of Engineering and Technology Research. 5, 12 (Dec. 2020), 145–151. DOI: