Surface Grinding Time
Surface-grinding passes and time from stock, downfeed, crossfeed and table speed.
Grinding time scales with the CUBE of tolerance ambition: halving downfeed doubles passes, and finer finish also wants slower crossfeed. The estimate excludes spark-out passes — add 2–4 zero-feed passes for flatness-critical work.
Formula
Note: Catalog starting values only — always confirm against your tool maker's data sheet and cut a test part. Machine rigidity, coolant and workholding shift real-world numbers.
Surface-grinding passes and time from stock, downfeed, crossfeed and table speed. A free cnc machining: speeds, feeds & tool wear tool — no sign-up, no upload, instant results in your browser.
About Surface Grinding Time
Surface Grinding Time computes the governing relationship t = ⌈stock/down⌉ × ⌈W/cross⌉ × 2L/v_table live as you type. Grinding time scales with the CUBE of tolerance ambition: halving downfeed doubles passes, and finer finish also wants slower crossfeed. The estimate excludes spark-out passes — add 2–4 zero-feed passes for flatness-critical work. Defaults are pre-filled with realistic values for this exact scenario, and the worked example substitutes your numbers step by step so the math is never a black box.
How to use Surface Grinding Time
- 1Enter your values — Stock to remove, Downfeed per pass, Workpiece width, Crossfeed per stroke and more (sensible defaults are pre-filled).
- 2Read the live results: Depth passes, Grinding time.
- 3Check the "with your numbers" line to see t = ⌈stock/down⌉ × ⌈W/cross⌉ × 2L/v_table substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Surface Grinding Time?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula t = ⌈stock/down⌉ × ⌈W/cross⌉ × 2L/v_table with authoritative sources cited on the page (Machinery's Handbook, 31st ed. — Speeds and Feeds; Kalpakjian & Schmid, Manufacturing Engineering and Technology, 7th ed., ch. 21)
- ✓Grinding time scales with the CUBE of tolerance ambition: halving downfeed doubles passes, and finer finish also wants slower crossfeed.
- ✓SI ⇄ Imperial toggle converts your inputs in place, so you can work in the units your drawings use
Frequently asked questions
What formula does the surface grinding time use?+
It evaluates t = ⌈stock/down⌉ × ⌈W/cross⌉ × 2L/v_table, exactly as published. Sources: Machinery's Handbook, 31st ed. — Speeds and Feeds; Kalpakjian & Schmid, Manufacturing Engineering and Technology, 7th ed., ch. 21. The substituted worked example on the page lets you verify every step against the textbook.
How should I read the result — and how far can I trust it?+
Grinding time scales with the CUBE of tolerance ambition: halving downfeed doubles passes, and finer finish also wants slower crossfeed. Catalog starting values only — always confirm against your tool maker's data sheet and cut a test part. Machine rigidity, coolant and workholding shift real-world numbers.
When is this calculator the right tool for the job?+
Surface-grinding passes and time from stock, downfeed, crossfeed and table speed. A free cnc machining: speeds, feeds & tool wear tool. The estimate excludes spark-out passes — add 2–4 zero-feed passes for flatness-critical work. For neighbouring scenarios, the related tools below cover the same engine with different presets.
Does it support both metric and imperial units?+
Yes — the SI ⇄ Imperial toggle converts the values already in the fields, preserving the physical quantity, so you can flip mid-calculation without re-entering anything.
Related tools
- Cost per Part — 3-Axis VMC
- Cost per Part — 5-Axis Machining Center
- Cost per Part — CNC Lathe (2-Axis)
- Cost per Part — Swiss-Type Lathe
- Cost per Part — CNC Router
- Cost per Part — Wire EDM
- Cost per Part — Cylindrical Grinding
- Accuracy Budget — Aerospace Drilling/Fastening
- Curing — Curing Method Effectiveness Ranking
Related Manufacturing tools
Spindle Speed Calculator — Aluminum 6061
Carbide starting RPM for milling Aluminum 6061: n = 1000·Vc/(π·D) with a handbook cutting speed preset.
● LiveSpindle Speed Calculator — Mild Steel 1018
Carbide starting RPM for milling Mild Steel 1018: n = 1000·Vc/(π·D) with a handbook cutting speed preset.
● LiveSpindle Speed Calculator — Stainless 304
Carbide starting RPM for milling Stainless 304: n = 1000·Vc/(π·D) with a handbook cutting speed preset.
● Live