By MachineryInsight
Shot blasting cost is not the machine price.
It is a daily operating expense.
If you quote work without knowing this cost, margins disappear later.
This guide from MachineryInsight explains exact cost per component using real shop-floor data.
Machine and Production Assumptions
Use these values as reference.
Replace them with your actual plant data.
Machine details
- Machine type. Hanger or table
- Turbines. 2
- Turbine motor rating. 7.5 kW each
- Total connected load. 15 kW
- Duty cycle. 80 percent
- Electricity tariff. ₹9 per unit
Production details
- Blasting rate. 0.8 ton castings per hour
- Components cleaned. 90 per hour
- Working hours per day. 10
- Daily output. 900 components
Daily Power Cost
Power cost remains stable only when the machine runs in healthy condition.
Formula
Total kW × Duty × Hours × Tariff
Calculation
15 × 0.8 × 10 × 9 = ₹1,080 per day
Tips to control power cost
- Replace turbine blades in sets
- Use correct steel shot size
- Avoid over-blasting
Daily Steel Shot Cost
Steel shot decides total blasting cost.
Accurate method
- Measure shot added per day
- Do not depend on theoretical charts
Industry data
- Shot loss range. 12 to 18 kg per ton
- Value used. 15 kg per ton
- Steel shot price. ₹80 per kg
Daily production
0.8 ton × 10 hours = 8 tons per day
Daily shot loss
8 × 15 = 120 kg
Daily shot cost
120 × 80 = ₹9,600 per day
Tips to reduce shot loss
- Seal cabinet leakage points
- Maintain separator air flow
- Remove sand carryover before blasting
Daily Wear Parts Cost
Wear parts affect power, finish, and shot loss.
Typical life data
- Turbine blade life. 300 hours
- Blade set cost. ₹8,000
- Control cage life. 800 hours
- Cage cost. ₹6,000
- Cabinet liners. ₹25,000 for 1,200 hours
Total wear cost per hour ≈ ₹55
Total Daily Shot Blasting Cost
Total daily cost
₹13,230 per day
Cost per Component
₹14.70 per component
Bottom Line
If you want this calculation automated,
an Excel shot blasting cost calculator by MachineryInsight is available.
For the Excel calculator and support,
WhatsApp 9488644303
About MachineryInsight
MachineryInsight publishes practical, shop-floor focused knowledge on shot blasting machines, foundry equipment, and cost control.