PERMISSIBLE WEAR

Part

Description

Permissible wear limits(decrease in size)
Gears First part of gearing 10% of tooth thickness on the p.c.d.
Other Gears 20% of tooth thickness on the p.c.d.
Wheels Flanges 50% of full size
Thread 30% of full size. When the difference in diameter between right side and left side wheels exceeds 1.5% remachine to rectify.
Sheaves Groove Diameter 50% of wire rope diameter
Brake Lining Thickness 50% of full size
Wire Rope No. of breakages as steel wires 10% of total strands per every 300mm length over the entire length.
GANTRY RAIL ALIGNMENT ALLOWANCES

SPAN & RAIL UNDULATION

PERMISSIBLE DEVIATION IN CRANE ALIGNMENT

GIRDER DEPTH(mm)

ALLOWANCES
400to500 2.50
500to630 3.15
630to800 4.00
800to1000 5.00
1000to1250 6.30
1250to1600 8.00
1600to2000 10.00

DISPLACEMENT OF VERTICAL PLANE OF SYMMETRY OF TWO WHEELS

DEVIATION OF THE VERTICALITY OF THE WHEELS

DEVIATION OF THE SQUARENESS OF THE GIRDER & SADDLE


AB=BC=CA

 
WHEEL BASE mm ALLOWANCES mm

2500 under

 1.0
2500 3150 under 1.25

3150

 4000 under 1.6

4000

 5000 under 2.0

5000

 6300 under 2.5

6300

 8000 under 3.15

8000

 10000 under 4.0

10000  

 12500 under 5.0
LUBRICATION CHART
S.No. Part to be lubricated Method of application INTERVAL RECOMMENDED LUBRICATION
Indoor Outdoor I.O.C. HP
1. ENCLOSED GEARING          
  (a) Less than 12 HP ambient temperature Less than 50°C

Splash



 A



B



Parthan 320 Enklo 220/320
Ambient Temperature greater than 50°C

Splash

 C D Parthan 320 Enklo 220/320
  (b) 12 to 40 HP ambient temperature less than 50°C Splash A B Parthan 320 Enklo 220/320
Ambient Temperature greater than 50°C Splash C D Parthan 320 Enklo 220/320
  (c) Above 40 HP ambient temperature less than 50°C Splash A

 B



Parthan 320 Enklo 220/320
Ambient Temperature greater than 50°C Splash C D Parthan 320 Enklo 220/320
2. OPEN GEARING

Manual

 E E Hytak 1 Hytak 4/0
3. BALL BEARING

Grease Nipple

 A B Lithon 2 Lithon EP 2
4. PLAIN SLEEVE BEARING Grease Pump F F Lithon 2 Lithon EP 2
5. TRACK WHEEL          
  (a) Plain sleeve bearings

Felt lubricated or grease pump

 G

G

 G

G

 Parthan 320

Lithon 2

 Enklo 220/320

Lithon EP 2
  (b) Antifriction

Grease Nipple

 A B Lithon 2 Hytak 0
6. SHEAVE & HOOK BLOCK          
  (a) Plain sleeve Brg. Grease Nipple F F Plutek 1 Hytak F4
  (b) Antifriction Brg. Grease Nipple A B Plutek 1 Hytak F4
  (c) Hook Swiel Manual G E Mobile
Grease Spl.		 Hytak F4
7. WIRE ROPES Manual E E Hytak 1 Hytak F4
8. ELECTRICAL PARTS (PINS) Manual E E Parthan 320 Enklo 220/320
LEGENDS

A

   Check and lubricate weekly Change after 2000 hrs. of operation or every six months
B   Check and lubricate weekly Change after 1500 hrs. of operation or every three months
C   Check and lubricate weekly Change after 1000 hrs. of operation or every three months
D   Check and lubricate weekly Change after 750 hrs. of operation or every two months
E   Apply weekly or every 50 hours
F   Apply daily or every 8 hours
G   Apply monthly or every 50 hours

ENGINEERING DIVISION | TYPES OF CRANES | GENERAL DESCRIPTION | PERMISSIBLE DEVIATIONS | ACCESSORIES & SERVICES | CRANE ENQUIRY FORM