BOGIE GENERAL ARRANGEMENT
Bogie bolster
Brake disc
Disc brake cylinder
& caliper
Bogie frame
Earthing
Sec. ver. Damper
Sec. spring
Yaw damper
Py. spring
Py. damper
Wheel set
Wheel set
Wheel for Fiat bogie
► Solid
forged / rolled to
Spec – IRS R-19
► Axles
- Spec – IRS R-16
Wheel and Axles
► Wheel
tread dia 915 (New), 845
(worn).
► In built slack adjusting facilities
in brake cylinder fitted.
► Each axle is fitted with two brake
discs, diameter 640 mm and
width 110 mm.
► Wheel reprofile – once in 6
months
► Approximate wheel life – 2 years
Wheel & axle complete
Axle bearings
► Taper
roller - cartridge
type bearing is used.
► It is a pre-assembled unit
– no further clearance
adjustments is needed.
Regreasing required once
in a year only.
► Grease – Shell lube
2760B
► The axle ends on the
bogie are fitted with
sensors for detecting
speed
► Approximate bearing life
– 4 years (20,00,000 km)
Axle bearings
Axle ends – with sensors / earthing
1 – Axle end with earthing
2 – Axle end without any sensor
3 & 4 – Axle ends with ‘Phonic
wheel assembly’ – for antiskid
sensor or Wheel Slide Protection
sensor
Axle ends – with sensors / earthing
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Earthing cable
Cover (suitable for earthing)
Lock plate
Bearing cup (retaining ring)
Bearing assembly
Control arm upper part
Control arm lower part
Cover (suitable for WSP)
Phonic wheel – for WSP
Cable (– to brake controller)
Cover
BOGIE FRAME
 The bogie frame is a solid welded frame made by
steel sheets and forged or cast parts.
The frame is made up of two longitudinal
components connected by two cross-beams
which also support the brake units.
The various supports which connect the different
bogie components are welded to the
frame.
 The bogie frame rests on the primary suspension
spring units and supports the vehicle body by
means of a bolster beam. The bolster beam is
connected to the bogie frame by secondary
suspension.
Bogie frame - parts
Disc brake-bkt
(casting)
Brake beam
Yaw damper-bkt
Side frame
Wirerope bkt
(transom – seam less tube)
Support beam bkt
Support beam & traction link - bkt
Spec – S355J2G3, EN 10025 / 29 – for other fabricated parts
Bogie frame –parts – up side down position
Anti-roll bar - bkt
Control arm-bkt
(forged)
Bkt – Lifting
Sec. ver. damper-bkt
Bkt – Pipe clamp
Safety strap
Primary stopper
Primary damper-bkt
Bogie frame – machining -up side down
Bogie Bolster - parts
Loading points
(similar to side bearer)
Wirerope bkt
Centre pivot – welded to bolster
Spec – S355J2G3, EN 10025 / 29 – for fabricated parts
Bogie Bolster – parts – upside down position
Loading points
(similar to side bearer)
Vertical damper bkt
Antiroll bar bkt
Vertical stop bkt
Centre pivot – welded to bolster
Spec – S355J2G3, EN 10025 / 29 – for fabricated parts
Lateral damper bkt
Bogie Bolster – air spring bogie
Reservoir – inbuilt
Hole to receive air spring spigot
Machined after complete
welding in loading points
Primary suspension
► Primary
suspension
consists of nested
inner and outer
springs, dampers,
top rubber pad
► Primary springs
are imported.
► Primary
suspension
► Consisting of two coil springs, one vertical
damper, An articulated control arm fitted with
twin-layer elastic joints connecting the axle
bearing to the bogie frame
► for curve negotiation.
Rubber stop - clearance
Primary suspension – positioning of springs
Coil direction - position
Primary suspension
Bogie frame, axle set - not shown
Rubber pad
Control arm –
upper & lower
Damper for Primary suspension
►Pin
type mounting
►Capacity
– 4250 N
at 0.30 m/sec
►Axial
stiffness – end
connections – 4500 N/mm
►Cardanic
►Imported
angle ±8°
item
Secondary suspension
► secondary
suspension consists of nested flexicoils springs (inner and outer springs),rubber
spring, vertical dampers, lateral dampers, antiroll bars, anchor links.
► Secondary rubber pad is inserted below and
above secondary springs provides flexible ends
of springs.
SECONDARY SUSPENSION
SECONDARY SUSPENSION
Secondary suspension
Bolster
Secondary springs- Flexico
Anti roll bar
Anchorlink
Support beam
Latera damper
Pin at loading point
Secondary suspension – upside down position
Bolster
Secondary springs- Flexico
Anti roll bar
Anchorlink
Support beam
Latera damper
Pin at loading point
Secondary suspension - Support beam
Secondary suspension - Support beam
(bolster, frame not shown)
Cp pin
Support beam
Longitudinal stop – screwed to CP pin
Lateral stop – screwed to beam
Secondary suspension - Support beam
- upside down position (bolster, frame not shown)
Cp pin
Support beam
Longitudinal stop – screwed to CP pin
Lateral stop – screwed to beam
Secondary suspension – traction centre & anchor link
(bolster, frame not shown)
Cp pin
(Longitudinal stop – screwing face in CP pin)
Traction centre (casting)
Anchor link with silent bloc
(forged end piece welded to the seam
less tube)
Secondary suspension – traction centre & anchor
link
Secondary suspension – traction centre & anchor
link- upside down position (bolster, frame not shown)
Cp pin
(Longitudinal stop – screwing face in CP pin)
Traction centre (casting)
Anchor link with silent bloc
(forged end piece welded to the seam
less tube)
Secondary suspension – Anti roll bar
(bolster, frame not shown)
DISC BRAKE SYSTEM
► AXLE
MOUNTED DISC
BRAKE
► TWO DISCS PER AXLE
OF DIA640
► INBUILT SLACK
ADJUSTER IN BRAKE
CYLINDERS
► 35mm BRAKE PADS
► Max cylinder pressure –
3.65 bar
► EBD – 1200m
DISC BRAKE SYSTEM- Brake disc on axle
Material – Grey cast iron
Disc brake - fitment
Disc brake – pipe connections
(brake cylinders on each axle provided with separate connections for WSP)
Carbody connection
Carbody connection – height
adjustment for wheel wear
WHEEL SET EARTHING EQUIPMENT
COACH LOWERED ON BOGIE
Phonic wheel fitment
Grounding
Fiat bogie with air spring