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spur gears

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001502
EISBN: 978-1-62708-234-1
...Abstract Abstract A portion of two large spur tooth bull gears made from 4147H Cr-Mo alloy steel that had spalling teeth was submitted for evaluation. The gears were taken from a final drive wheel reduction unit of a very large open-pit mining truck. The parts had met the material and initial...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001499
EISBN: 978-1-62708-236-5
...Abstract Abstract Three spur gears made from 8622 Ni-Cr-Mo alloy steel formed a straight-line train in a speed reducer on a rail-mounted overslung lumber carrier. The gears were submitted for nondestructive examination and evaluation, with no accompanying information or report. Two teeth on one...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001248
EISBN: 978-1-62708-221-1
...Abstract Abstract Failure occurred in the teeth of a case-hardening Ni-Cr-Mo alloy steel spur gear in the transmission system of heavy duty tracked vehicles. The defects were in the nature of seizure on the involute profile. Scrutiny of the transmission system showed there might be choking...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006820
EISBN: 978-1-62708-329-4
...Abstract Abstract This article first reviews variations within the most common types of gears, namely spur, helical, worm, and straight and spiral bevel. It then provides information on gear tooth contact and gear metallurgy. This is followed by sections describing the important points of gear...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001815
EISBN: 978-1-62708-180-1
... because a gear is designed with a specific function in mind. The question is, Will this gear perform the function that was intended by the designer? Types of Gears Spur Gears Spur gears ( Fig. 1a ) are used to transmit motion between parallel shafts or between a shaft and a rack. The teeth...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001498
EISBN: 978-1-62708-218-1
... in a medium-size, off-highway truck at an open-pit mine. The pinion was the input sun pinion of a gear-reduction unit in the rear wheel assembly, where it mated with four spur tooth idler gears. The only recorded length of service was the customer's statement—“for a relatively short time.” Identifying...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001797
EISBN: 978-1-62708-241-9
... and State University ( 1996 ) 16. Huang K.J. , Liu T.S. : Dynamic analysis of a spur gear by the dynamic stiffness method . J. Sound Vib. 234 ( 2 ), 311 – 329 ( 2000 ) 10.1006/jsvi.1999.2869 17. Cornell R.W. : Compliance and stress sensitivity of spur gear teeth . J...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006792
EISBN: 978-1-62708-295-2
... Behaviour of PVD-Coated Spur Gears , Key Eng. Mater. , Vol 385–387 , 2008 , p 57 – 60 , 10.4028/www.scientific.net/KEM.385-387.57 141. Bobzin K. , Lugscheider E. , Maes M. , Gold P.W. , Loos J. , and Kuhn M. , High-Performance Chromium Aluminium Nitride PVD...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
...Advantages and disadvantages of local and global scuffing criteria Table 1 Advantages and disadvantages of local and global scuffing criteria Advantages Disadvantages Local scuffing criteria Predicts gear scuffing during running-in Efficient at low and high oil...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003510
EISBN: 978-1-62708-180-1
... the areas of mass. Avoid sharp corners and reentrant angles. Avoid sharp corners between heavy and thin sections. Avoid single internal or external keys, keyways, or splines. Provide adequate fillet or radius at the base of gear teeth, splines, and serrations. Do not have holes in direct line...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
.... , and Karlins S. , Investigation of a Bridge Crane Derailment with Limited Subject Parts , J. Fail. Anal. Prevent. , Vol 20 ( No. 1 ), 2020 , p 51 – 57 10.1007/s11668-019-00798-5 12. Merah N. and Al-Qutub A. , Premature Failure of an Industrial Mixer Timing Gears , J. Fail. Anal...