LT End Carriage Calculator

As per IS 3177 & IS 807 Standards

1. Project & Weight Inputs

Crane Capacity (SWL) kg

Total Crane Weight kg (Girders, ECs, etc.)

Crane Span (S) mm

Min. Hook Approach (A) mm

Trolley + Hoist Weight kg

2. Mechanism & Component Inputs

Crane Duty Class M1 (Life: 400h, Impact: 1.12) M2 (Life: 800h, Impact: 1.18) M3 (Life: 1600h, Impact: 1.25) M4 (Life: 3200h, Impact: 1.32) M5 (Life: 6300h, Impact: 1.40) M6 (Life: 12500h, Impact: 1.50) M7 (Life: 25000h, Impact: 1.60) M8 (Life: 50000h, Impact: 1.60)

LT Travel Speed m/min

Wheel Diameter (D) mm

Rail Head Width (b) mm

Wheel Material Factor (k) N/mm² (Ref: IS 3177: 8.6.8)

Bearing 'C' Rating N

Axle Bearing Centers (L) mm

Axle Diameter (d) mm

Axle Perm. Bending Stress N/mm²

Axle Perm. Shear Stress N/mm²

Selected Buffer Capacity Joules

Perm. Structural Stress N/mm² (Case II)

3. Structural Inputs (from FEM/Analysis)

Enter the properties and max loads on the end carriage box section (for Case II).

Vertical Bending (M_y) N-mm

Section Modulus (Z_y) mm³

Horizontal Bending (M_x) N-mm

Section Modulus (Z_x) mm³

Torsional Shear ($\tau_t$) N/mm² (Calculated)

Vertical Shear ($\tau_v$) N/mm² (Calculated)

1. Max Wheel Load (MWL)

Impact Factor ($\Psi$):

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Max. Load per EC:

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Max Wheel Load (P_max):

2. Mechanical Checks (IS 3177)

A. Wheel Sizing (Contact Stress)

Allowable Load (P_allow):

Actual Load (P_max):

Status:

B. Bearing Selection (L10h Life)

Wheel RPM:

Required Life:

Calculated Life:

Status:

C. Axle Design (Bending & Shear)

Bending Stress (Actual):

Bending Status:

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Shear Stress (Actual):

Shear Status:

3. Structural Check (IS 807)

Equivalent (von Mises) Stress

Total Bending Stress ($\sigma_b$):

Total Shear Stress ($\tau$):

Calculated von Mises:

Permissible Stress:

Status:

4. Buffer Calculation (IS 3177)

Kinetic Energy

Total Moving Mass:

Impact Speed:

Calculated KE:

Buffer Capacity:

Status: