Datasets:
nfulton
/
stembolts_dataset

Dataset card Data Studio Files
xet
 Community
1
input
stringlengths
44
76
part
stringclasses
20 values
diag_confidence
float64
0.26
0.99
alignment pin length 1.1mm short, insufficient engagement depth
alignment pin
0.88
flange surface pitting observed during scheduled maintenance
flange
0.61
collar keyway wallowed out from repeated impact loading
collar
0.64
valve core does not reach full open position, travel limited to 10%
valve core
0.51
spiral wound seal ring unwinding at inner diameter edge
seal ring
0.64
galvanic corrosion between housing and copper mating component
housing
0.7
stem shaft spline wear pattern indicates misalignment
stem shaft
0.71
retention clip missing from assembly, found loose in packaging
retention clip
0.93
noise increases with temperature, suggests preload issue
bearing
0.99
locking mechanism engages but does not hold under shock loading
locking mechanism
0.63
dampener gas charge pressure 18% below rated value
dampener
0.78
thread assembly pitch diameter out of tolerance on CMM measurement
thread assembly
0.91
housing vent hole blocked, causing internal pressure buildup
housing
0.79
compression spring coils clashing at 23% of rated travel
compression spring
0.89
actuator output shaft seal leaking hydraulic fluid
actuator
0.81
pin extraction force measured at 249N, spec is 142N minimum
alignment pin
0.81
regulator lockup pressure 29% above setpoint under no-flow condition
pressure regulator
0.89
locking mechanism pawl worn to 17% of original thickness
locking mechanism
0.65
spring rate measured at 1.1 N/mm vs 4.8 N/mm specification
compression spring
0.92
housing mounting ears cracked under repeated thermal cycling
housing
0.67
variable rate spring transition point shifted from 0mm to 100mm
compression spring
0.69
stem shaft bent 0.9mm after drop test from 2.0 meters
stem shaft
0.61
sleeve to shaft clearance increased by 66% from original
coupling sleeve
0.81
housing bore surface finish degraded to Ra 2.6 from wear
housing
0.44
o-ring extruded from groove under 7 kPa sustained pressure
o-ring
0.92
mechanic notes stembolt leaks at installation angle above 40 degrees
gasket
0.5
seal ring lip torn, likely during assembly process
seal ring
0.74
stem shaft surface hardness measured at HRC 48, spec is HRC 60-65
stem shaft
0.62
bushing operating temperature 40C above expected steady-state value
bushing
0.47
coupling sleeve OD corroded from exposure to transmission fluid
coupling sleeve
0.69
collar interference fit lost, now slip fit after thermal events
collar
0.81
seal works fine at room temp but leaks at 90C operating temperature
o-ring
0.75
high-pitched whine from unit during operation between 2500-5000 RPM
bearing
0.59
flange bolts found finger-tight during inspection
flange
0.77
bushing lubrication groove plugged with debris
bushing
0.44
visible extrusion of seal ring material into clearance gap
seal ring
0.53
alignment pin length 0.4mm short, insufficient engagement depth
alignment pin
0.79
valve core stuck in 5 position after power loss event
valve core
0.82
actuator travel reduced to 28% of full stroke
actuator
0.41
actuator stalls under load at 64% of rated capacity
actuator
0.56
seal ring has flat spot from prolonged storage under compression
seal ring
0.59
gasket surface shows chemical attack from transmission fluid contact
gasket
0.3
seal ring groove shows wear marks indicating improper installation
seal ring
0.68
valve core travel limited by debris lodged in bore
valve core
0.62
thread root radius shows stress corrosion cracking initiation
thread assembly
0.62
o-ring backup ring extruded into clearance gap under high pressure
o-ring
0.55
slight oozing at gasket face, worsens under vibration loading
gasket
0.49
customer reports same vibration issue across multiple replacement units
dampener
0.67
dampener force-velocity curve shifted 87% from baseline
dampener
0.93
housing mounting ears cracked under repeated thermal cycling
housing
0.79
pilot signal required to shift valve core exceeds 4.8 kPa
valve core
0.81
dampener bottoming out during high-amplitude vibration test
dampener
0.57
lock release force measured at 313N, spec is 193N
locking mechanism
0.9
slight oozing at gasket face, worsens under vibration loading
gasket
0.47
vibration signature changed after 1500 hours of operation
bearing
0.97
stembolt seized during installation torque test at 22 Nm
thread assembly
0.64
multiple units from batch 2875 showing early locking wear
locking mechanism
0.65
seal ring contact surface scored by foreign object debris
seal ring
0.61
dampener bushing eye worn, causing clunking under load reversal
dampener
0.7
o-ring groove dimensions out of spec by 0.13mm on diameter
o-ring
0.65
torque limiter reset mechanism jammed in tripped position
torque limiter
0.72
oil leaks when self-sealing apparatus is oriented between 0.3 - 1.0 radians
gasket
0.78
diamond pin not allowing for thermal growth, binding at 70C
alignment pin
0.96
seal failure at gasket junction after 1000 thermal cycles
gasket
0.46
thread plating peeling, causing rough engagement feel
thread assembly
0.85
compression spring end coils ground unevenly causing tilt under load
compression spring
0.92
unit fails to reach rated torque, maxes out at 84% of specification
torque limiter
0.73
shaft fillet radius at shoulder shows beach marks from fatigue
stem shaft
0.82
pressure regulator sticking during rapid pressure changes
pressure regulator
0.77
self-seal takes 5x longer to engage than specification allows
actuator
0.74
transmitted torque ripple of 28% measured at output shaft
torque limiter
0.77
housing mounting ears cracked under repeated thermal cycling
housing
0.84
pressure regulator sticking during rapid pressure changes
pressure regulator
0.53
torque limiter not resetting after overload event at 35 Nm
torque limiter
0.41
hairline crack found on stem shaft during ultrasonic inspection
stem shaft
0.94
mechanism cycles 6 times before failing to lock, spec is 100000
locking mechanism
0.67
housing internal bore out of round by 0.01mm
housing
0.62
housing drain port clogged, fluid pooling in lower cavity
housing
0.81
slow pressure bleed observed over 8000 hour static hold test
o-ring
0.66
gasket material hardened and cracked after acid wash exposure
gasket
0.39
compression spring hydrogen embrittlement from plating process
compression spring
0.94
flange parallelism out by 0.04mm across 200mm diameter
flange
0.45
backlash in coupling sleeve measured at 0.02mm, spec is 0.02mm
coupling sleeve
0.79
dampener gas charge pressure 38% below rated value
dampener
0.42
fretting debris visible at collar-to-shaft interface
collar
0.79
flange warped 0.14mm after high-temperature excursion to 120C
flange
0.71
coupling sleeve chrome plating flaking off inner bore surface
coupling sleeve
0.66
bushing worn oval, clearance doubled from original spec
bushing
0.77
torque limiter reset mechanism jammed in tripped position
torque limiter
0.74
thread form profile out of spec per optical comparator check
thread assembly
0.73
bearing temperature 120C above baseline during operation
bearing
0.39
flash from o-ring molding process interfering with seal contact
o-ring
0.78
spring rate measured at 4.6 N/mm vs 3.0 N/mm specification
compression spring
0.62
housing vent hole blocked, causing internal pressure buildup
housing
0.76
gasket failed bubble test at 9.5 kPa differential
gasket
0.64
collar keyway wallowed out from repeated impact loading
collar
0.91
pressure regulator hunting at setpoint, cycling 10 times per second
pressure regulator
0.79
lock engagement inconsistent, works roughly every other attempt
locking mechanism
0.9
housing internal bore out of round by 0.05mm
housing
0.71
housing cracked at mounting point after freeze-thaw cycling
housing
0.51