BT50 Series Heavy-Duty SLN Side-Lock End Mill Holder

BT50 Series Heavy-Duty SLN Side-Lock End Mill Holder

Ultra-rigid BT50 taper side-lock end mill holders with maximum clamping force, available in 6-50mm clamping diameters and 100L-350L lengths, designed for heavy-duty roughing and deep-hole machining on BT50 CNC machining centers.
High Precision
ISO/CE Certified
Industrial Durability
OEM/ODM Support
Fast Global Delivery
Professional After-Sales
Inquire Now View Applications
Angle head
Products

Description

BT50 series heavy-duty SLN side-lock end mill holders are manufactured from high-strength alloy steel with overall vacuum quenching and precision grinding, the ultimate tool holding solution for heavy-load roughing, deep-hole milling and drilling applications on BT50 spindle CNC machining centers.
  1. Side-lock clamping design (dual set screws for extended length models) delivers unmatched gripping force and rigidity, completely eliminating tool slippage even under the most demanding heavy cutting loads.
  2. Ultra-precision machining ensures ≤0.005mm runout accuracy at 4×D from the holder face, delivering excellent machining precision and surface finish even under heavy loads.
  3. Comprehensive size range supports 6mm to 50mm tool shank diameters, covering all common end mill, U-drill and drill sizes.
  4. Multiple length options (100L/150L/200L/250L/300L/350L) accommodate various deep-hole machining requirements and complex workpiece geometries.
  5. Standard 7/24 taper design is 100% compatible with all mainstream BT50 spindle CNC machine tools.
  6. Black oxide surface treatment provides excellent corrosion resistance and long-term durability in harsh industrial environments.

Complete Specification Table (Unit: mm)

Model L L1 L2 L3 L4 L5 L6 D d1 d2 d3 T FIG Weight Price
BT50-SLN6-100 201.8 100 62 38 50 10 12 100 6 25 — M6 1 4.1KG
BT50-SLN8-100 201.8 100 62 38 50 12 14 100 8 28 — M8 1 4.15KG
BT50-SLN10-100 201.8 100 62 38 55 14 15 100 10 35 — M10 1 4.15KG
BT50-SLN12-100 201.8 100 62 38 60 16 20 100 12 40 — M10 1 4.15KG
BT50-SLN16-100 201.8 100 62 38 100 18 22 100 16 45 — M10 1 4.15KG
BT50-SLN16-150 251.8 150 112 38 100 18 22 100 16 38 45 M10 2 5.0KG
BT50-SLN16-200 301.8 200 162 38 100 18 22 100 16 38 45 M10 2 6.8KG
BT50-SLN16-250 351.8 250 212 38 100 18 22 100 16 38 45 M10 2 7.0KG
BT50-SLN16-300 401.8 300 262 38 100 18 22 100 16 38 45 M10 2 7.5KG
BT50-SLN20-100 201.8 100 62 38 100 20 25 100 20 50 — M12 1 4.8KG
BT50-SLN20-150 251.8 150 112 38 100 20 25 100 20 45 50 M12 2 5.8KG
BT50-SLN20-200 301.8 200 162 38 100 20 25 100 20 45 50 M12 2 6.9KG
BT50-SLN20-250 351.8 250 212 38 100 20 25 100 20 45 50 M12 2 7.3KG
BT50-SLN20-300 401.8 300 262 38 100 20 25 100 20 45 50 M12 2 7.8KG
BT50-SLN25-100 201.8 100 62 38 110 25 24 100 25 60 — M12 1 5.5KG
BT50-SLN25-150 251.8 150 112 38 110 25 24 100 25 50 55 M12 2 6.0KG
BT50-SLN25-200 301.8 200 162 38 110 25 24 100 25 50 55 M12 2 7.0KG
BT50-SLN25-250 351.8 250 212 38 110 25 24 100 25 50 55 M12 2 7.5KG
BT50-SLN25-300 401.8 300 262 38 110 25 24 100 25 50 55 M12 2 8.0KG
BT50-SLN25-350 451.8 350 312 38 110 25 24 100 25 50 55 M12 2 8.5KG
BT50-SLN32-105 206.8 105 67 38 120 28 24 100 32 65 - M16 1 6KG
BT50-SLN32-150 251.8 150 112 38 120 28 24 100 32 58 63 M16 2 6.5KG
BT50-SLN32-200 301.8 200 162 38 120 28 24 100 32 58 63 M16 2 7.5KG
BT50-SLN32-250 351.8 250 212 38 120 28 24 100 32 58 63 M16 2 8.0KG
BT50-SLN32-300 401.8 300 262 38 120 28 24 100 32 58 63 M16 2 8.5KG
BT50-SLN32-350 451.8 350 312 38 120 28 24 100 32 58 63 M16 2 9.0KG
BT50-SLN40-115 216.8 115 77 38 120 32 30 100 40 80 - M20 1 6.6KG
BT50-SLN40-150 251.8 150 112 38 120 32 30 100 40 70 75 M16 2 7.0KG
BT50-SLN40-200 301.8 200 162 38 120 32 30 100 40 70 75 M16 2 7.5KG
BT50-SLN40-250 351.8 250 212 38 120 32 30 100 40 70 75 M16 2 8.0KG
BT50-SLN40-300 401.8 300 262 38 120 32 30 100 40 70 75 M16 2 8.5KG
BT50-SLN40-350 451.8 350 312 38 120 32 30 100 40 70 75 M16 2 9.0KG
BT50-SLN42-120 221.8 120 82 38 120 32 30 100 42 80 - M20 1 6.5KG
BT50-SLN42-150 251.8 150 112 38 120 32 30 100 42 75 80 M20 1 7.5KG
BT50-SLN42-200 301.8 200 162 38 120 32 30 100 42 75 80 M20 1 8.5KG
BT50-SLN50-120 221.8 120 82 38 120 35 35 100 50 90 - M20 1 7.2KG
BT50-SLN50-150 251.8 150 112 38 120 35 35 100 50 85 90 M20 1 8.5KG
BT50-SLN50-200 301.8 200 162 38 120 35 35 100 50 85 90 M20 1 9.5KG

Parameter Explanation

  • L/L1/L2/L3/L4/L5/L6/D/d1/d2/d3 : Overall and mounting dimensions (unit: mm), corresponding to the engineering drawings
  • T : Thread specification of the side-lock set screw
  • FIG : Structural type identifier (1=standard single set screw type, 2=reinforced dual set screw type for longer lengths)
  • Weight : Net weight per unit (unit: KG)
  • Model Naming :
    • BT50: 7/24 taper spindle interface standard
    • SLN: Side-lock end mill holder series
    • The number after SLN indicates the maximum clamping diameter (e.g., SLN32 = 32mm clamping diameter)
    • The last number indicates the total length of the tool holder (e.g., 150 = 150mm 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.

Hot Products