Simple Guide on How to Calculate CNC Machine Hour Rate
Understanding CNC machining cost is essential for Indian manufacturers, job shop owners, and businesses looking to price their services correctly. This comprehensive guide will help you calculate your CNC machine hour rate with simple, clear steps tailored to the Indian manufacturing context.
What is CNC machine hour rate?
The machine hour rate (MHR) is the total cost of running your CNC machine for one hour. This includes all expenses related to the machine operation—not just electricity. Knowing this rate helps you quote accurate prices to customers and ensure your business stays profitable in India’s competitive manufacturing market.
Why Calculate Machine Hour Rate?
Understanding how gas cutting works is simple when broken down into basic steps.
The Basic Gas Cutting Procedure
The gas cutting process follows a systematic approach that ensures clean, precise cuts through metal materials.
1) Price your CNC machining services accurately
2) Understand your actual production costs
3) Make informed decisions about new projects
4) Control manufacturing expenses effectively
5) Stay competitive in the domestic and export markets
6) Evaluate machine ROI for business expansion
Basic Components of CNC Machine Hour Rate
Your machine hour rate comprises Fixed Costs (Overheads) and Variable Costs (Running Costs), calculated by summing these costs over the machine’s effective annual operating hours.
Fixed Costs (Overhead)
These remain constant regardless of machine usage.
1.Depreciation
These remain constant regardless of machine usage.
Formula: Depreciation per Hour = (Machine Cost – Scrap Value) / Useful Life in Hours
Example: CNC milling machine purchased for ₹40,00,000 with 10-year life and 2,400 annual working hours:
1)Total useful life = 10 years × 2,400 hours = 24,000 hours
2) Depreciation per hour = ₹40,00,000 / 24,000 = ₹166.67 per hour
Note: In India, typical CNC machine prices range from:
1)Entry-level desktop CNC: ₹1,25,000 – ₹5,00,000
2) Mid-range CNC router/lathe: ₹5,00,000 – ₹15,00,000
3) Industrial VMC (Vertical Machining Center): ₹12,00,000 – ₹80,00,000+
2. Rent & Utilities
Formula: Rent per Hour = (Total Annual Rent × Machine Floor Space %) / Annual Working Hours
Example: Factory rent ₹1,00,000/month, machine occupies 10% of space, 2,400 annual working hours:
1)Annual rent allocation = ₹1,00,000 × 12 × 10% = ₹1,20,000
2) Rent per hour = ₹1,20,000 / 2,400 = ₹50 per hour
Your share of factory rent and utilities (excluding machine power) allocated to this machine.
3. Insurance & Taxes
Annual insurance policy costs for the machine.
Formula: Rent per Hour = (Total Annual Rent × Machine Floor Space %) / Annual Working Hours
Example: Annual premium ₹60,000 for 2,400 working hours:
1) Insurance per hour = ₹60,000 / 2,400 = ₹25 per hour
Industry Standard: Typically 1-2% of machine value annually.
4. Supervision/Management
Allocated staff costs for supervision and indirect labor.
Formula: Supervision per Hour = (Annual Supervisor Salary × Allocation %) / Annual Working Hours
Example: Foreman earning ₹40,000/month supervising 5 machines, allocation 20% to this machine:
1)Annual cost = ₹40,000 × 12 × 20% = ₹96,000
2)Supervision per hour = ₹96,000 / 2,400 = ₹40 per hour
Variable Costs (Running Costs):
1. Electricity (Power Consumption)
Formula: Power Cost per Hour = Machine Power (kW) × Electricity Rate per Unit (₹/kWh)
Typical Power Consumption:
1. Small desktop CNC: 2-4 kW
2. Mid-range CNC lathe/router: 5-10 kW
3. Industrial VMC: 10-20 kW
4. Heavy-duty machines: 20-30 kW
Example: A machine using 12 kW at ₹8 per kWh (typical industrial rate in India):
Power cost = 12 × ₹8 = ₹96 per hour
1.Gujarat, Karnataka: ₹7-₹9 per unit
2.Tamil Nadu: ₹7.50 per unit (industrial HT tariff)
3. Maharashtra, West Bengal: ₹9-₹11 per unit
4. National average: ₹8-₹11 per unit for industrial consumers
The company focuses on providing customized solutions tailored to specific industry requirements, working closely with clients to recommend suitable equipment configurations. What sets Competence Techno apart is their comprehensive after-sales support, including installation assistance, operator training, preventive maintenance programs, and readily available spare parts. Their commitment to quality is reflected in the use of premium components and adherence to international manufacturing standards.
2. Consumables (Coolant, Cutting Oils, Tools)
Account for cutting tools, coolant, lubricants, and other consumable materials.
Formula: Consumables per Hour = Annual Consumable Expenses / Annual Working Hours
Example: Spending ₹1,80,000 annually on tools and consumables with 2,400 working hours:
Consumables cost = ₹1,80,000 / 2,400 = ₹75 per hour
Breakdown::
1) Cutting tools: ₹40-₹60 per hour
2) Coolant/cutting fluid: ₹10-₹15 per hour
3) Lubricants: ₹5-₹10 per hour
Industry benchmark: Tooling typically costs 5-8% of total machining cost for precision work.
3. Maintenance (Annual Repairs, Spare Parts)
Formula: Maintenance Cost per Hour = Annual Maintenance Budget / Working Hours per Year
Example: If you budget ₹1,20,000 annually for maintenance with 2,400 working hours:
Maintenance cost = ₹1,20,000 / 2,400 = ₹50 per hour
Industry benchmark: Typically allocate 3-5% of machine purchase price annually for maintenance.
4. Operator Labor (Wages & Benefits)
Include the wages of the person operating the machine, including statutory benefits.
Formula: Labor Cost per Hour = (Annual Salary + Benefits) / Working Hours per Year
Example: An operator earning ₹25,000/month (₹3,00,000 annually) with ₹60,000 in annual benefits (PF, ESI, bonus):
Total annual cost = ₹3,00,000 + ₹60,000 = ₹3,60,000
Hourly labor cost = ₹3,60,000 / 2,400 = ₹150 per hour
CNC Operator Salaries in India (January 2025):
1) Entry-level (0-2 years): ₹12,000-₹18,000/month
2) Mid-level (2-5 years): ₹18,000-₹25,000/month
3) Senior (5+ years): ₹25,000-₹40,000/month
Note: Always include 20-25% for statutory benefits (PF, ESI, Bonus, Gratuity)
Complete Machine Hour Rate Formula
MHR= (Total Fixed Costs + Total Variable Costs) / Total Effective Machine Hours
Understanding the Components
Fixed Costs (Annual):
1) Machine Depreciation
2) Rent & Utilities
3) Insurance & Taxes
4) Supervision/Management
Variable Costs (Annual):
1) Power Consumption
2) Consumables
3) Maintenance and Repair
4) Operator Labor
Total Effective Machine Hours: Actual productive hours the machine operates per year (not total calendar hours)
Calculation Using Our Indian Examples
Fixed Costs (Annual):
Depreciation: ₹4,00,000
Rent & Utilities: ₹1,20,000
Insurance: ₹60,000
Supervision: ₹96,000
Supervision: ₹96,000
Variable Costs(Annual):
Power (₹96 × 2,400 hours): ₹2,30,400
Consumables: ₹1,80,000
Maintenance: ₹1,20,000
Labor: ₹3,60,000
Total Variable Costs = ₹8,90,400
Total Costs = ₹6,76,000 + ₹8,90,400 = ₹15,66,400
MHR = ₹15,66,400 / 2,400 hours = ₹652.67 per hour
Rounded: ₹650 per hour
Alternative Simplified Method
You can also calculate by adding individual hourly components:
MHR = Depreciation/hr + Rent/hr + Insurance/hr + Supervision/hr + Power/hr + Consumables/hr + Maintenance/hr + Labor/hr
₹166.67 + ₹50 + ₹25 + ₹40 + ₹96 + ₹75 + ₹50 + ₹150 = ₹652.67 per hour
Both methods give the same result. The first formula is more comprehensive for annual budgeting, while the second is useful for quick calculations.
Example Calculation (Simplified VMC)
Let’s say a VMC has:
Annual fixed costs (depreciation, rent, insurance, supervision): ₹2,00,000
Variable costs (power, consumables, maintenance, operator): ₹220/hour
Productive hours per year: 1,200
Calculation:
1) Fixed Cost per Hour: ₹2,00,000 / 1,200 hours = ₹166.67/hour
2) Total Hourly Rate (MHR): ₹166.67 (Fixed) + ₹220 (Variable) = ₹386.67/hour
3) Final Billing Rate: ₹386.67 + Profit Margin (20% = ₹77.33) = ~₹464/hour
Typical MHR Ranges in India
| Machine Type | Base MHR | With Profit (20-30%) |
| CNC Turning Center | ₹160-200/hr | ₹200-260/hr |
| CNC Milling (Standard) | ₹320-350/hr | ₹400-455/hr |
| Desktop CNC | ₹300-400/hr | ₹375-520/hr |
| VMC (3-Axis) | ₹600-800/hr | ₹750-1,040/hr |
| VMC (Industrial) | ₹1,000-1,500/hr | ₹1,250-1,950/hr |
| 5-Axis CNC (Advanced) | ₹2,700-3,000/hr | ₹3,240-3,900/hr |