Shaft and axle

Presentationon

shaft and axle

Presented by-Sanjay Sharma11setme520110106241

ELECTRIC LOCO SHED KANPUR

CONTENTS IntroductionAxle ShaftGear wheel endRoad wheel end Traction WheelWheel press machineWAP-4 Salient featuresWAG-7 Salient features

Condition of failuresTm pinion teeth broken seizureAxle box bearing seizureGear teeth broken seizureTapper roller bearing seizureEnclosure rotate seizureBearing housing moving loose seizureRacer loose seizureRacer spotted seizureMSU (Motor Suspension Unit) Rib Crack

seizure

AXLE

AXLEA central shaft for a rotating wheel or

gear.

Axle may be fixed to the wheels rotating with them, or fixed to its surroundings.

Bearing or bushing provided at mounting points.

Bearing or bushing sits inside the hole in the wheel.

shaft

SHAFT

Shaft is a mechanical component transmits torque and rotation.

Shaft used to connect other components of a drive train can not be connected directly.

Shaft are carries of torque.

Shaft subject to torsion and shear stress.

Gear wheel end

• AXLE COLLER• BULL GEAR• ENCLOSURE• END COVER• TAPPER ROLLER

BEARING• BEARING RACER

CUP

Road wheel end

• ADJUSTMENT WASHER• BEARING HOUSING• BEARING RACER CUP• TAPPER ROLLER

BEARING• END COVER• ABUTMENT PIECE

TRACTION MOTOR

TRACTION MOTORMODEL NO. HS-15250ACAPACITY 630 KWRATING CONSTVOLTAGE 750 VEXCITATION SERIESCURRENT 500 ACOOLING AIR 80 m3/minSPEED 895 rpmPOLES 6

wheel

WHEELWheel of a rake is a specifically made

cylindrical portion having an outer edge shape to fit in the railway track. The material is stainless steel.

New wheel diameter is 915 mm.

Cundem wheel diameter is 825 mm.

Workshop release diameter is 837 mm.

WHEEL PRESS MACHINE

WAP-4 salient features

Wap-4TYPES OF LOCOMOTIVE

WAP-4

GAUGE 1676 mm

WHEEL ARRANGEMENT CO-CO

SERVICE PASSENGER

RATING OF TRACTION MOTOR

630 KW

GEAR RATIO 23/58

MAX.SERVICE SPEED 140 km/hr

CONT.POWER OF LOCO 5060 hp

WAG-7 salient features

WAG-7TYPES OF LOCOMOTIVE

WAG-7

GAUGE 1676 mm

WHEEL ARRANGEMENT CO-CO

SERVICE FREIGHT

RATING OF TRACTION MOTOR

HITACHI HS15250A

GEAR RATIO 16/65

MAX. SERVICE SPEED 100 km/hr

CONT. POWER OF LOCO 5000 hp

CONDITION OF FAILURES 1.TM pinion (TEETH BROKEN)SEIZURE

• Improper quality of oil.• Inspect for crack.• The spiral teeth of the pinion each have different spiral

angles.• Tm-4 pinion teeth broken as suspected collar matching.

2.Axle box bearing seizure

• Clearance as per specification.• Improper lubrication.• Over heat the bearing.• Axle box bearing over heat on piece of railway rolling stock.

3.Gear teeth broken seizure

• There is no crack on teeth.• Same height of all teeth.• Same angle of all teeth.• Improper lubrication.

4.Tapper roller bearing seizure

• Proper mounting.• Misalignment.• Bearing fatigue and corrosion.• Defective sealing.• High temperature.

5.Enclosure rotate seizure

• Brake the 6 bolts then enclosure is rotate.• Enclosure is not fatigue and corrosion.• High temperature.• Improper lubrication.

6.Bearing housing moving loose

• Size of MSU cup is increase on non gear side.• Break the 8 bolts then bearing housing is loose.• Racer loose.• Bearing spotted .

7.Racer loose seizure

• Gear or non gear side temperature is rising.• Bolts loose.• Abnormal sound in MSU.• Housing loose.

8.Recer spotted seizure

• Sound in axle bearing.• The metal contact comes on mid of the roller

then racer is damage.• Abnormal sound in MSU.• Improper lubrication.

9.MSU RIB CRACK SEIZURE

• Motor jerk will be increase.

• Traction motor bolt is break.

THANK YOU