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Bearing cap

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Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001377
EISBN: 978-1-62708-215-0
... to 30 A 4 to 6 4 138 102 1 fail/31 B 4 to 6 4 138 102 3 fail/24 to 27 A 6 4 102 75 0 fail/… B 6 4 102 75 1 fail/33 (a) Each treatment consisted of a 60-s purge of generated warm moist H 2 S gas into the bearing cap chamber once per hour. Properties of bolts...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001198
EISBN: 978-1-62708-221-1
...Abstract Abstract Cast iron bearing caps in tractor engines fractured repeatedly after only short operating periods. The fracture originated in a cast-in groove and ran approximately radially to the shaft axis. The smallest cross section was at the point of fracture. The core structure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0048592
EISBN: 978-1-62708-218-1
... showed three of four bearing caps, two cap screws, and one universal-joint spider had fractured. Examination of the three fractured bearing caps and the spider showed no evidence of fatigue but showed that fracture occurred in a brittle manner. The bearing cap that was not destroyed still contained...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001630
EISBN: 978-1-62708-236-5
... of Peter Solness/Network Photographers Fig. 2 Failed bearing cap viewed from outer surface. Two reinforcing straps have been welded lengthwise along the top of the cap. A crack in the rib is arrowed. Fig. 3 Failed bearing cap viewed from inner surface Fig. 4 Fractured...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
... failed cap screw showing beach marks typical of high-stress reversed-bending fatigue failure. 4× Visual examination of the assembly showed that three of four bearing caps, two cap screws, and one universal-joint spider had fractured. Examination of the three fractured bearing caps...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001759
EISBN: 978-1-62708-241-9
... of bearing cup is also found invalid based on the measurements of hardness values of the samples selected. Through hardening of bearing cap is found as valid based on metallurgical analyses of the failed and ok sample. Bearing cup inner diameter and outer diameter were found to be ok as per specification...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089646
EISBN: 978-1-62708-235-8
... the cope side. (b) From the drag side. Note the more numerous graphite nodules in (a). Both etched with nital. 60x Fig. 3 Micrograph from the cope side of the main-bearing journal. Ferrite caps, which partially cover the graphite nodules and cause the broken-open surface condition, are shown...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001809
EISBN: 978-1-62708-180-1
...) halves of trimetal bearings for a diesel engine that failed because of distortion of the crankcase. The center three bearing halves sustained greater damage than the end halves. Fig. 14 Bearing halves (a) that failed by fatigue resulting from localized overloading after bearing cap shifted...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001099
EISBN: 978-1-62708-214-3
... contact with each other, and the steel cap screws were tightened directly against the bottoms of countersunk recesses machined into the aluminum diffuser plate. During disassembly to correct the bearing failure, two of the eight 3 8 in. diam alloy steel hexagonal socket-head cap screws (16...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001578
EISBN: 978-1-62708-233-4
...: Machine Tool Vibration Case #9: Extremely High Levels of Vibration on the End Cap of a Large Pipe Case #10: Vibration Noise Affecting Dolphins Case #11: High Vibration on Plate Glass Window Case #12: Vibration on Piping Connected to an Engine Driven Reciprocating Compressor Case #13: Paper...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001098
EISBN: 978-1-62708-214-3
...Abstract Abstract Six ASTM A-574 steel cap screws from a hydraulic coupling failed after 3 months in service. The screws were replacements for smaller-diameter cap screws that had been installed during an outage. Six new cap screws were examined along with the failed screws. Eight fracture...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
..., and nonmetallic inclusions. Fractures also result from bearing misalignment that is either introduced at assembly or caused by deflection of supporting members in service, from mismatch of mating parts, and from careless handling in which the shaft is nicked, gouged, or scratched. To a lesser degree...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001837
EISBN: 978-1-62708-241-9
... the load bearing capability of the material. Hence, it becomes essential to measure any locked-in stresses stored in the material after welding process. Residual stress measurement was carried out on welded part using hole drill method as per ASTM standard E 837. Electric resistance-type strain gage...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
... Abstract Overload failures refer to the ductile or brittle fracture of a material when stresses exceed the load-bearing capacity of a material. This article reviews some mechanistic aspects of ductile and brittle crack propagation, including a discussion on mixed-mode cracking, which may also...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
... OVERLOAD FAILURES, from the perspective of materials failure analysts, refer to the ductile or brittle fracture of a material when stresses exceed the load-bearing capacity of the material from either excessive applied stress or degradation of the load-bearing capacity of the material from damage...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003554
EISBN: 978-1-62708-180-1
... It should be pointed out that alloys of these embrittler metals can also be embrittling. In fact, for service failures, the embrittling metal is probably not pure but is impure or an alloy. For example, tin- and lead-base bearing alloys and solders also cause metal-induced embrittlement. Furthermore, some...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006786
EISBN: 978-1-62708-295-2
... or an alloy. For example, tin- and lead-base bearing alloys and solders also cause metal-induced embrittlement. Furthermore, some alloy additions to embrittling metals have been observed to increase the severity of embrittlement, while other additions have had the opposite effect. Field failures...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003573
EISBN: 978-1-62708-180-1
... is that even if cracking does not occur, the transformation may create a distortion failure due to dimensional growth or warpage in a close-tolerance assembly, such as a precision bearing. When the temperature is changed, different coefficients of thermal expansion for different materials...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006797
EISBN: 978-1-62708-295-2
..., the transformation may create a distortion failure due to dimensional growth or warpage in a close-tolerance assembly, such as a precision bearing. When the temperature is changed, different coefficients of thermal expansion for different materials in a heterogeneous structure can cause interference between...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001783
EISBN: 978-1-62708-241-9
... slide on one another, the coefficient of friction depends mainly on shear strength, yield strength, and hardness of the materials [ 1 ]. Good toughness and hardness of the tool steel is needed to crimp the nylon caps. However, the aluminum bronze bushing which normally has good wear properties has yield...