Compact 90° Right Angle Head (DK90-BT30 ER Series)

Key Technical Features and Material Standards

• Ultra-Lightweight Casing (< 2.8 kg): Specially engineered with an optimized high-strength alloy casing to maintain total weight under strict ATC payload limits. This design protects the automatic tool changer arm and spindle retention mechanism on high-acceleration tapping centers.
• Gleason Precision Ground Gears: The drive system features Gleason ground spiral bevel gears manufactured from 20CrMnTi Alloy Steel. Heat-treated to a surface hardness of HRC 58-62 and ground to ISO Grade 4 precision, the gears deliver transmission backlash ≤ 15 arcmin and operational noise ≤ 70 dB under rated RPM.
• Preloaded Precision Bearings: Supported by preloaded, high-precision P4 grade angular contact ball bearings (NSK/FAG), ensuring dynamic rigidity, low heat generation, and consistent spindle mouth runout ≤ 0.005 mm.

2D/3D Technical Drawings and CAD Download Center

Technical Specifications

Quality Assurance and Testing Standards

Before packaging, every single DK90-BT30 ER series angle head undergoes a 100% Quality Inspection Protocol at our manufacturing facility:

• Static and Dynamic Runout Test: The maximum allowable runout of the spindle taper is checked with a high-precision dial indicator. It is strictly limited to ≤ 0.005 mm at the spindle nose and ≤ 0.015 mm at 4D distance.
• 60-Minute Continuous Run-In: Each unit is operated at its rated operational speed for 60 minutes. The housing temperature rise must remain ≤ 25°C above ambient temperature to verify lubrication integrity and gear meshing.
• Anti-Backlash Calibration: Verified with angular encoders to keep the transmission backlash at or below 15 arcminutes.

Target Industries and Industrial Applications

• 3C & Consumer Electronics: High-speed side milling of internal antenna slots, connector recesses, and lateral mounting holes in aluminum and magnesium alloy enclosures.
• Medical Equipment Manufacturing: Precision micro-milling and side drilling of orthopedic implants, surgical instruments, and dental fixtures requiring small-tool clamping (ER11/ER16).
• Precision Automotive Components: Processing side cross-holes and threads on lightweight aluminum castings, sensor housings, and small valve bodies.

CNC Machine Compatibility

Optimized for high-speed drilling & tapping machines and compact Vertical Machining Centers (VMC). Compatible spindle interfaces include:

• Spindle Standards: BT30 / BBT30 (Face & Taper double contact).
• Typical Machine Brands: Compatible with Brother Speedio (S300, S500, S700, M140X), Fanuc RoboDrill (α-D14MiB, α-D21LiB), Haas (DT-1, DM-1), and Enshu machine tools.

B2B Industrial Packing and Shipping Standards

• Anti-Rust Protection: Coated with premium anti-rust oil and vacuum-sealed in a heavy-duty VCI (Vapor Corrosion Inhibitor) bag accompanied by industrial desiccant packs.
• Shock Absorption: Cradled inside custom-contoured, high-density EPE shockproof foam blocks to prevent shifting or drop impact during courier transport.
• Outer Casing: Packed in an export-grade, double-wall corrugated heavy-duty carton or an ISPM 15-compliant, Fumigation-Free Plywood Case depending on shipping requirements.
• HS Code: 8466.10.10.00 or 8466.30.00.90.
• Lead Time: Standard models are shipped within 5-7 working days. Custom positioning blocks (G-distance) are completed and shipped within 15-20 working days.
• Shipment Ports: Shanghai / Ningbo / Tianjin Port, China.
• Incoterms Supported: FOB, CIF, EXW, FCA, DDU, DDP.
• Express Delivery: Shipped via international air couriers (DHL, FedEx, UPS) with delivery to Europe and North America within 3-5 business days.

Technical Setup and Stop Block Alignment Guide

codeText

       ┌──────────────────────────────────────┐
       │     MACHINE TOOL SPINDLE FACE        │
       └──────────────────┬───────────────────┘
                          │ (Spindle Centerline)
                          │ 
                          ▼◄──────  G  ──────►[STOP BLOCK]
                       ┌─────┐                    │
                       │Taper│                    │ (Locking Bore)
                       └─────┘                    ▼
                          │               ┌───────────────┐
                     ┌────┴────┐          │ Positioning   │
                     │  Body   ├──────────┤ Pin (D18/D20) │
                     │  Casing │          └───────────────┘
                     └─────────┘

1. Stop Block Mounting: Securely bolt the dedicated stop block (retaining block) to the front face of the machine spindle.
2. Verify Center Distance (G-Dimension): Confirm that the center-to-center distance between the machine spindle and positioning pin socket matches your ordered G-Distance (commonly 65mm or 80mm on BT30 machines).
3. Indicate Side Runout: Chuck a ground test arbor into the ER collet. Sweeping a dial indicator along the arbor horizontally, adjust the stop block’s locking bolts until the parallelism is aligned within 0.015 mm per 100mm.
4. Confirm ATC Clearances: Run a manual tool changer (ATC) test cycle at low speed to verify the automatic arm smoothly grabs, seats, and releases the BT30 taper without physical interference.

Technical FAQ