1-20 of 37 Search Results for

Thrust bearings

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0047964
EISBN: 978-1-62708-223-5
... Abstract Drastic reduction in the service life of a production gearbox was observed. Within the gearbox, the axial load on a bevel gear (8620 steel, OD 9.2 cm) was taken by a thrust-type roller bearing (3.8 cm ID, 5.6 cm OD) in which a ground surface on the back of the bevel gear served...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001363
EISBN: 978-1-62708-215-0
...) Pitch control thrust bearing set: Fatigue load summary Table 2 Pitch control thrust bearing set: Fatigue load summary Test dates Thrust load range Run time, 10 6 rev Damage fraction Cumulative damage fraction kg lb 1970–1975 0–1470 0–3240 0.205 0.0174...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001076
EISBN: 978-1-62708-214-3
...Abstract Abstract The silver layer on a thrust bearing face experienced electrostatic discharge attack (the bombardment of an in-line series of individual sparks onto the soft bearing face), which destroyed the integrity of the bearing surface. The electrical attack appeared as scratches...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001139
EISBN: 978-1-62708-221-1
...Abstract Abstract A truck-mounted hydraulic crane had a horizontal thrust bearing with one race attached to the truck and the other to the rotating crane. The outside race of the bearing was driven by a pinion gear, and it is through this mechanism that the crane body rotated about a vertical...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047059
EISBN: 978-1-62708-217-4
... acted as a stop-off during carburizing of the offset, circular thrust-bearing surface surrounding the 16-mm (0.637-in.) diam hole. The bearing surface was case hardened to a depth of 0.05 to 0.1 mm (0.002 to 0.005 in.), then austempered to obtain a minimum hardness of 600 Knoop (1-kg, or 2.2-lb, load...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001045
EISBN: 978-1-62708-214-3
...Abstract Abstract A failure analysis was conducted on brass alloy 270 heat exchanger tubes that were pulled from a unit used to cool oil for the speed regulators and thrust bearings of a hydroelectric power plant. The tubes began to leak after approximately 5.5 years of service...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001484
EISBN: 978-1-62708-229-7
..., wrecking the thrust bearing and badly damaging the labyrinths and interstage gland rings. The thrust bearing was repaired and the turbine put back into service until such time as it could be dismantled and a detailed examination made. This examination, after one month's further service, revealed...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1
... bearings, they occupy the available space, locating themselves by contact with each other. Ball bearings can be divided into three categories: radial contact, angular contact, and thrust. Radial-contact ball bearings are designed for applications in which loading is primarily radial with only low axial...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003502
EISBN: 978-1-62708-180-1
... of the axle eye into the top and bottom bearings of the stub axle yoke. A thrust bearing is fitted between the bottom of the axle eye and the bottom bearings in the yoke to accept the vehicle weight from the axle eye. The forces are thus transmitted from axle eye to yoke without undue friction when steering...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001730
EISBN: 978-1-62708-229-7
... within limits) to the lower revolving ring by springs which impose 18,000 lb of compression. The grinding ring, driven through the shaft, is guided by two roller bearings. A thrust bearing supports the entire load applied by the spring pressure, grinding ring weight, and other associated components...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001143
EISBN: 978-1-62708-229-7
... droplets on trailing blades is responsible for a significant portion of the erosion damage [ 13 ]. Further evidence of a severe water induction is the failure of the thrust bearing from excessive movement of the rotor in the direction of the steam flow. When a severe water induction incident occurs...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001473
EISBN: 978-1-62708-229-7
... the coupling between the main gear wheel and the alternator rotor was of the solid bolted type. The gearbox casing contained the main bearings for the gear wheel, one of which also supported one end of the alternator rotor and served as a thrust bearing to counter any axial movement. Fig. 1 Ramains...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001485
EISBN: 978-1-62708-225-9
..., to a pronounced degree, in a fairly uniform manner round the circumference on one ball track, the other showing only a slight polish. It is evident, therefore, that this bearing has been subjected to excessive axial thrust which has served to increase the load on one track with a corresponding reduction...
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
... surfaces include the slideways of machine tools and the thrust bearings that limit the axial movement of rotating shafts. Spherical surfaces allow rotary motion around more than one axis, such as that provided by the hip joint of the human skeleton. The cylindrical surface pair (the shaft and journal pair...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001754
EISBN: 978-1-62708-241-9
... following the failure of the engine core module. Subsequent tear down of the engine revealed that the source of metallic debris was the Gearbox Drive gearshaft assembly. Specifically, the failure was found to have originated at the thrust bearing attached to a bevel gearshaft that is rotated by the engine...
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
... causes slight loss of power and requires thrust bearings. Fig. 2 Sections of a helical gear (a) and a helical rack (b). Herringbone gears ( Fig. 3a ), sometimes called double helical gears, are used to transmit motion between parallel shafts. In herringbone gears, tooth engagement...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001824
EISBN: 978-1-62708-241-9
... that bolts suffered severe corrosion attack and several were cracked and fractured. Impeller wear ring was loose, causing damage to the upper and lower casing splitters. Impeller eye wear rings were corroded and discolored, and the inactive thrust bearing was heavily wiped. The metallurgical...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003564
EISBN: 978-1-62708-180-1
... Figure 4 shows a cross-sectional view of the test rig. The test unit has a unidirectional thrust bearing configuration, which consists of three balls or rollers equally spaced at 120° by a retainer and loaded between a stationary flat washer and a rotating grooved washer. The rotating washer produces...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001486
EISBN: 978-1-62708-234-1
... Abstract Cavitation damage of diesel engine cylinder liners is due to vibration of the cylinder wall, initiated by slap of the piston under the combined forces of inertia and firing pressure as it passes top dead center. The occurrence on the anti-thrust side may possibly result from bouncing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047991
EISBN: 978-1-62708-225-9
... to be flame hardened to 55 HRC minimum and 50 HRC 3.2 mm ( 1 8 in.) below the surface. Other surfaces of the rings were to have a hardness of 24 to 28 HRC. The bearing capacity at 1.67 rpm was a radial load of 713,000 kg (1,572,000 lb) and an axial (thrust) load of 459,000 kg (1,012,800 lb). Samples...