Speeds & Feeds

Real-time spindle, feed, ramp, and plunge recommendations with RPM caps, HSS thermal limits, flute clearance, and machine-class guardrails.

Machine

Spindle limit and rigidity class.

Max spindle speed(n_max, RPM)

Machine rigidity

Material

Workpiece material

Tool

f_z band 0.025–0.060 mm/tooth for this diameter/material.

Tool type

Tool material

Diameter(D, mm)

Flute count(z)

Surface speed(V_c, m/min)

Conservative 250425 m/minHigh 600

Vc lookup sources

LittleMachineShop — Cutting Speeds (Milling)HSS-oriented milling SFM by material. Converted ×0.3048 → m/min.
LittleMachineShop — Cutting Speeds (Turning HSS/Carbide)Carbide SFM used as an upper guide for solid-carbide end mills (milling often slightly lower than turning).
Wikipedia — Speeds and feeds (HSS cutter table)HSS MPM/SFM table (Brown & Sharpe / Smithy citations on wiki).

Lookup mid 425 m/min. Actual after RPM cap: 113.1 m/min.

Operation

Strategy presets nudge a_e / a_p toward deep axial, light radial (HEM). You can still override.

Strategy

Axial depth(a_p, mm)

Radial engagement(a_e, mm or % of D)

12% of D · 0 for pure drilling

Feed per tooth(f_z, mm/tooth)

Conservative 0.0250.0425 mm/toothHigh 0.06

fz lookup sources

MachiningDoctor — Chip Load Chart (metric)Primary Ø→fz ranges for aluminium (and steel/SS cross-check) in mm/tooth.
Harvey Tool — General Machining Guidelines (IPT by Ø)Carbide IPT vs diameter for Al 6061/7075, brass, low-alloy steel, austenitic SS. IPT×25.4 → mm/tooth; material factors from Al-relative IPT ratios.
Engineers Edge — Machinability index (steel / aluminum)AISI relative machinability (1212 = 100%). Cross-check with Engineering Toolbox. Used to order 6061 vs 7075 — not a linear chipload formula.

Matches applied result (includes light-machine derate when auto). Band is recommended span.

Fusion CAM values

Spindle-limited

Grouped like Fusion 360 toolpath settings — copy and enter below.

Speed

Spindle speed(n)

6,000rpm · 100% n_max

Surface speed(V_{c, actual})

113.1m/min

Ramp spindle speed(n_ramp)

6,000rpm

Feedrates

Cutting feedrate(F)

510mm/min

Feed per tooth(f_z)

0.0425mm/tooth

Lead-in feedrate(F_lead-in)

382.5mm/min

Lead-out feedrate(F_lead-out)

382.5mm/min

Transition feedrate(F_transition)

510mm/min

Ramp feedrate(F_ramp)

382.5mm/min

Ramp angle

3.7° · band 3–10°

Ramp angle sources

Harvey Performance — Ramping to SuccessStarting ramp angles: soft/non-ferrous 3°–10°; hard/ferrous 1°–3°. Emphasizes conservative entry in micromachining.
Helical Solutions — Machining Guidebook (ramp angles)Same non-ferrous 3°–10° / ferrous 1°–3° starting bands as Harvey/Helical guidance.
Prototool — Ramp milling (angles + feed % vs angle)Repeats material angle bands; feed vs angle: ≤2.5°→100%, ≤5°→75%, ≤15°→50% (Kennametal-style).

Vertical feedrates

Plunge feedrate(F_plunge)

153mm/min

Plunge feed per revolution(f_plunge)

0.0255mm/rev

Retract feedrate(F_retract)

510mm/min

Retract feedrate per revolution(f_retract)

0.085mm/rev

Passes and linking

Use stepdown

Yes12 mm

Use stepover

Yes0.72 mm

Coolant

flood

Flood (emulsion) — keeps Al chips flushing

Shop check

Material removal rate(MRR)

4.41cm³/min

Export for Fusion

Copy Fusion-ordered values, or JSON for tooling.

Active warnings

Hover or expand each item for manufacturing rationale.

info

Spindle-limited: Operating surface speed reduced to 113.1 m/min.

Why this triggers

Ideal RPM for the recommended surface speed exceeds your machine max. Feed is recalculated at the capped spindle speed so chipload stays consistent.