BT Series FMB Face Mill Arbor Tool Holder - BT30/BT40/BT50

BT Series FMB Face Mill Arbor Tool Holder - BT30/BT40/BT50

High-rigidity BT taper face mill arbors with G2.5 dynamic balance, available in FMB16-FMB40 sizes and multiple lengths, designed for high-speed face milling operations on BT spindle CNC machining centers.
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Description

BT series FMB face mill arbors are manufactured from high-strength alloy steel with overall vacuum quenching and precision grinding, the standard tool holders for mounting face milling cutters on BT spindle CNC machining centers.
  1. High-rigidity one-piece construction delivers exceptional stability and vibration damping, ensuring excellent surface finish and extended tool life even under heavy cutting loads.
  2. Ultra-precision machining ensures ≤0.005mm runout accuracy at the cutter mounting face, delivering consistent machining precision.
  3. G2.5 grade dynamic balance up to 25,000 RPM minimizes vibration at high speeds, improving machining efficiency and reducing tool wear.
  4. Comprehensive size range supports FMB16, FMB22, FMB27, FMB32 and FMB40 cutter mounting diameters, with multiple length options to accommodate various machining depths.
  5. Available in both standard and through-coolant types, with different cutter bore diameters (D48/D60/D62) to match all common face milling cutter brands.
  6. Standard 7/24 taper design is 100% compatible with all mainstream BT30, BT40 and BT50 spindle CNC machine tools.

Complete Specification Table (Unit: mm)

BT30 Series Face Mill Arbors

Model L L1 L2 L3 L4 D d1 d2 K1 K2 M FIG Weight Price
BT30-FMB16-60 125.4 60 33 27 17 46 38 16 3.2 8 M8×1.25P 1 0.5KG
BT30-FMB22-45 111.4 45 18 27 18 46 48 22 4.8 10 M10×1.5P 2 0.75KG
BT30-FMB22-60 126.4 60 33 27 18 46 48 22 4.8 10 M10×1.5P 2 1.5KG
B30-FMB27-45 113.4 45 18 27 20 46 58 27 5.8 12 M12×1.75P 2 1.45KG
BT30-FMB27-60 128.4 60 33 27 20 46 58 27 5.8 12 M12×1.75P 2 1.45KG
BT30-FMB32-45 115.4 45 18 27 22 46 63 32 6.8 14 M16×2.0P 2 1.5KG
BT30-FMB32-60 130.4 60 33 27 22 46 63 32 6.8 14 M16×2.0P 2 1.6KG
BT30-FMB40-60 133.4 60 33 27 25 46 63 40 6.8 14 M16×2.0P 2 1.8KG

BT40 Series Face Mill Arbors

Model L L1 L2 L3 L4 D d1 d2 K1 K2 M FIG Weight Price
BT40-FMB16-60 142.4 60 33 27 17 63 38 16 3.2 8 M8×1.25P 1 1.3KG
BT40-FMB16-100 182.4 100 73 27 17 63 38 16 3.2 8 M8×1.25P 1 1.4KG
BT40-FMB22-60 143.4 60 33 27 18 63 48 22 4.8 10 M10×1.5P 1 1.5KG
BT40-FMB22-100 183.4 100 73 27 18 63 48 22 4.8 10 M10×1.5P 2 2.05KG
BT40-FMB22-150 233.4 150 123 27 18 63 48 22 4.8 10 M10×1.5P 1 2.75KG
BT40-FMB22-200 283.4 200 173 27 18 63 48 22 4.8 10 M10×1.5P 1 3.6KG
BT40-FMB22-250 333.4 250 223 27 18 63 48 22 4.8 10 M10×1.5P 1 4.25KG
BT40-FMB22-300 383.4 300 273 27 18 63 48 22 4.8 10 M10×1.5P 1 4.9KG
BT40-FMB22-350 433.4 350 323 27 18 63 48 22 4.8 10 M10×1.5P 1 5.65KG
BT40-FMB22-400 483.4 400 373 27 18 63 48 22 4.8 10 M10×1.5P 1 7.15KG
BT40-FMB22-450 533.4 450 423 27 18 63 48 22 4.8 10 M10×1.5P 1 7.9KG
BT40-FMB22-500 583.4 500 473 27 18 63 48 22 4.8 10 M10×1.5P 1 7.9KG
BT40-FMB27-60 145.4 60 33 27 20 63 58 27 5.8 12 M12×1.75P 1 2.35KG
BT40-FMB27-100 185.4 100 73 27 20 63 58 27 5.8 12 M12×1.75P 1 3.1KG
BT40-FMB27-150 235.4 150 123 27 20 63 58 27 5.8 12 M12×1.75P 1 3.9KG
BT40-FMB27-200 285.4 200 173 27 20 63 58 27 5.8 12 M12×1.75P 1 4.8KG
BT40-FMB27-250 335.4 250 223 27 20 63 58 27 5.8 12 M12×1.75P 1 5.7KG
BT40-FMB27-300 385.4 300 273 27 20 63 58 27 5.8 12 M12×1.75P 1 6.6KG
BT40-FMB32-60 147.4 60 33 27 22 63 63 32 6.8 14 M16×2.0P 2 1.9KG
BT40-FMB32-100 187.4 100 73 27 22 63 63 32 6.8 14 M16×2.0P 2 2.8KG
BT40-FMB32-150 237.4 150 123 27 22 63 63 32 6.8 14 M16×2.0P 2 3.6KG
BT40-FMB32-200 287.4 200 173 27 22 63 63 32 6.8 14 M16×2.0P 2 4.2KG
BT40-FMB40-60 150.4 60 33 27 25 63 74 40 8.3 16 M16×2.0P 2 2.8KG
BT40-FMB40-100 190.4 100 73 27 25 63 74 40 8.3 16 M16×2.0P 2 3.6KG
BT40-FMB40-150 240.4 150 123 27 25 63 74 40 8.3 16 M16×2.0P 2 4.9KG
BT40-FMB40-200 290.4 200 173 27 25 63 74 40 8.3 16 M16×2.0P 2 6.2KG

BT50 Series Face Mill Arbors

Model L L1 L2 L3 L4 D d1 d2 K1 K2 M FIG Weight Price
BT50-FMB16-60 178.8 60 22 38 17 100 38 16 3.2 8 M8×1.25P 1 4.0KG
BT50-FMB16-100 218.8 100 62 38 17 100 38 16 3.2 8 M8×1.25P 1 4.2KG
BT50-FMB16-150 268.8 150 112 38 17 100 38 16 3.2 8 M8×1.25P 1 4.5KG
BT50-FMB16-200 318.8 200 162 38 17 100 38 16 3.2 8 M8×1.25P 1 4.8KG
BT50-FMB22-60 179.8 60 22 38 18 100 48 22 4.8 10 M10×1.5P 1 4.6KG
BT50-FMB22-100(D48) 219.8 100 62 38 18 100 48 22 4.8 10 M10×1.5P 1 4.55KG
BT50-FMB22-150(D48) 269.8 150 112 38 18 100 48 22 4.8 10 M10×1.5P 1 5.25KG
BT50-FMB22-200(D48) 319.8 200 162 38 18 100 48 22 4.8 10 M10×1.5P 1 6.0KG
BT50-FMB22-250(D48) 369.8 250 212 38 18 100 48 22 4.8 10 M10×1.5P 1 7.0KG
BT50-FMB22-300(D48) 419.8 300 262 38 18 100 48 22 4.8 10 M10×1.5P 1 7.7KG
BT50-FMB22-350(D48) 469.8 350 312 38 18 100 48 22 4.8 10 M10×1.5P 1 8.4KG
BT50-FMB22-400(D48) 519.8 400 362 38 18 100 48 22 4.8 10 M10×1.5P 1 9.2KG
BT50-FMB22-450(D48) 569.8 450 412 38 18 100 48 22 4.8 10 M10×1.5P 1 10.0KG
BT50-FMB22-500(D48) 619.8 500 462 38 18 100 48 22 4.8 10 M10×1.5P 1 11.2KG
BT50-FMB22-45(D48) 164.8 45 7 38 18 100 60 22 4.8 10 M10×1.5P 1 4.0KG
BT50-FMB22-60(D60) 179.8 60 22 38 18 100 60 22 4.8 10 M10×1.5P 1 4.8KG
BT50-FMB22-100(D60) 219.8 100 62 38 18 100 60 22 4.8 10 M10×1.5P 1 5.9KG
BT50-FMB22-150(D60) 269.8 150 112 38 18 100 60 22 4.8 10 M10×1.5P 1 7.05KG
BT50-FMB22-200(D60) 319.8 200 162 38 18 100 60 22 4.8 10 M10×1.5P 1 8.4KG
BT50-FMB22-250(D60) 369.8 250 212 38 18 100 60 22 4.8 10 M10×1.5P 1 9.45KG
BT50-FMB22-300(D60) 419.8 300 262 38 18 100 60 22 4.8 10 M10×1.5P 1 10.5KG
BT50-FMB22-350(D62) 469.8 350 312 38 18 100 62-58 22 4.8 10 M10×1.5P 1 12.0KG
BT50-FMB22-400(D62) 519.8 400 362 38 18 100 62-58 22 4.8 10 M10×1.5P 1 13.25KG
BT50-FMB22-450(D62) 569.8 450 412 38 18 100 62-58 22 4.8 10 M10×1.5P 1 15.6KG
BT50-FMB22-500(D62) 619.8 500 462 38 18 100 62-58 22 4.8 10 M10×1.5P 1 16.95KG
BT50-FMB22-550(D62) 669.8 550 512 38 18 100 62-58 22 4.8 10 M10×1.5P 1 18.0KG
BT50-FMB22-600(D62) 719.8 600 562 38 18 100 62-58 22 4.8 10 M10×1.5P 1 22.0KG
BT50-FMB22-650(D62) 769.8 650 612 38 18 100 62-58 22 4.8 10 M10×1.5P 1 22.0KG
BT50-FMB22-700(D62) 819.8 700 662 38 18 100 62-58 22 4.8 10 M10×1.5P 1 25.0KG

Parameter Explanation

  • L/L1/L2/L3/L4/D/d1/d2 : Overall and mounting dimensions (unit: mm), corresponding to the engineering drawings
  • K1/K2 : Keyway dimensions for cutter alignment
  • M : Thread specification of the cutter locking screw
  • FIG : Structural type identifier (1=standard type, 2=reinforced type for larger diameters)
  • D48/D60/D62 : Cutter mounting bore diameter, matching different face milling cutter standards
  • Weight : Net weight per unit (unit: KG)
  • Model Naming :
    • BTXX: 7/24 taper spindle interface standard (BT30/BT40/BT50)
    • FMBYY: Face mill arbor type, YY indicates the cutter mounting diameter (FMB16-FMB40)
    • ZZ: Total length of the tool holder (e.g., 100 = 100mm length)

Applications

CNC Machining

Ideal for CNC lathe, milling and machining center operations, ensuring high-precision dimensional control and reliable tool holding for mass production.

Quality Control Labs

Suitable for quality inspection departments and calibration labs, providing accurate measurement data to verify product compliance with ISO and industry standards.

Mold & Die Making

Perfect for mold and die workshops, where micron-level precision tools and gauges are essential for complex cavity machining and final inspection.

OEM/ODM Projects

Customizable solutions for OEM and ODM manufacturing partners, offering tailored measuring tools and CNC accessories to meet unique production requirements.

Automotive Manufacturing

Designed for automotive component production lines, ensuring consistent precision and durability in engine parts, transmission components and assembly processes.

Aerospace & Precision Engineering

Ideal for aerospace and defense manufacturing, where ultra-high precision instruments and reliable tool holders meet strict quality and safety requirements.

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