DN factor, also called DN Value, is a number that is used to determine the correct base oil viscosity for the lubrication of various types of bearings. [1][2][3][4][5]
It can also be used to determine if a bearing is the correct choice for use in a given application.[3] It is a product of bearing diameter (D) and speed (N).[1][2]
D = diameter (in millimeters) of the bearing in question. For most types of bearings, there are actually two required measurements: the inner diameter and outer diameter. In such cases, D = (A+B)/2, where A = inner diameter and B = outer diameter. The sum of these two values is then divided by 2 to obtain the median diameter, sometimes also called pitch diameter.[4][citation needed]
N = bearing speed. This is the maximum amount of revolutions per minute (RPM) that the bearing will move.
The DN factor of a bearing is obtained by multiplying the median diameter (A + B)/2 by RPM, and sometimes by a correction factor.[2][6] This correction factor may vary from manufacturer to manufacturer. No consensus exists among tribologists as to a constant correction factor across manufacturers.
^ ab""Speed Limitation: Speed and Lubricant Factors"". Retrieved Oct 19, 2018.
^ abc""How to Calculate DN Factor"". Retrieved Oct 19, 2018.
^ ab""DN Factor"". Retrieved Oct 19, 2018.
^ ab""Choosing a High-Speed Grease"". Retrieved Oct 19, 2018.
^""Lubrication of Rolling Bearings: Tips and Advice"" (PDF). Retrieved Oct 19, 2018.
^""Rolling bearing lubrication"". oks-germany.com. Retrieved Oct 19, 2018.
DNfactor, also called DN Value, is a number that is used to determine the correct base oil viscosity for the lubrication of various types of bearings...
Look up dN in Wiktionary, the free dictionary. DN, dN, or dn may refer to: Digital number, the discrete of an analog value sampled by an analog-to-digital...
The Big Five personality traits, sometimes known as "the five-factor model of personality" or "OCEAN model", are a grouping of five unique characteristics...
The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly...
PMID 13193076. Howard TA, Misra DN, Grove M, Becich MJ, Shao JS, Gordon M, Alpers DH (1996). "Human gastric intrinsic factor expression is not restricted...
algorithm has these main steps: Let n be the number to be factored. Let Δ be a negative integer with Δ = −dn, where d is a multiplier and Δ is the negative discriminant...
(u,m)+\operatorname {dn} (u,m)}{1+\operatorname {dn} (u,m)}}}} cn ( u 2 , m ) = ± m ′ + dn ( u , m ) + m cn ( u , m ) 1 + dn ( u , m ) {\displaystyle...
med/3495 at eMedicine Factor X deficiency Cooper DN, Millar DS, Wacey A, Pemberton S, Tuddenham EG (July 1997). "Inherited factor X deficiency: molecular...
Guanine nucleotide exchange factors (GEFs) are proteins or protein domains that activate monomeric GTPases by stimulating the release of guanosine diphosphate...
The Page Up and Page Down keys (sometimes abbreviated as PgUp and PgDn) are two keys commonly found on computer keyboards. The two keys are primarily used...
intensity factor range of a load cycle ( Δ K {\displaystyle \Delta K} ) is the Paris–Erdogan equation d a d N = C ( Δ K ) m {\displaystyle {da \over dN}=C(\Delta...
needed] In the alternative pathway, C3b binds to Factor B. Factor D releases Factor Ba from Factor B bound to C3b. The complex of C3b(2)Bb is a protease...
National Right (Italian: Movimento Sociale Italiano – Destra Nazionale, MSI–DN). Formed in 1946 by supporters of the former dictator Benito Mussolini, most...
pp. 1–3. doi:10.1007/978-3-642-84988-6_1. ISBN 978-3-540-56971-8. Louis DN, Ohgaki H, Wiestler OD, Cavenee WK, Burger PC, Jouvet A, et al. (August 2007)...
Samaññaphala Sutta (DN 2) in English (Thanissaro, 1997). The same verse is in the Potthapada Sutta (DN 9) (Thanissaro, 2003). Sāmaññaphalasuttaṃ (DN 2) in Pali...
1160462. PMID 18988848. S2CID 23586705. Downes BP, Saracco SA, Lee SS, Crowell DN, Vierstra RD (September 2006). "MUBs, a family of ubiquitin-fold proteins...
Fibroblast growth factor receptor 3 is a protein that in humans is encoded by the FGFR3 gene. FGFR3 has also been designated as CD333 (cluster of differentiation...
McCaughan KK, Wilson DN, Tate WP (April 2003). "Mapping functionally important motifs SPF and GGQ of the decoding release factor RF2 to the Escherichia...
Factoring in the decay the mathematical formula for the learning rate is: η n + 1 = η n 1 + d n {\displaystyle \eta _{n+1}={\frac {\eta _{n}}{1+dn}}}...
to a class of growth factors, secreted proteins that can signal particular cells to survive, differentiate, or grow. Growth factors such as neurotrophins...
working to develop vaccines to fight opioid addiction" Vtnews.vt.edu Cao DN, Shi JJ, Hao W, Wu N, Li J (March 2016). "Advances and challenges in pharmacotherapeutics...
kingdoms of India List of monarchs of Magadha List of Indian monarchs Jha, D.N. (2002). Ancient India in Historical Outline. Delhi: Manohar Publishers and...
Global Information