Heavy-Duty Dual Output 90° Right Angle Head (DK90-BT50-2X Series)

Key Technical Features and Material Standards

• Opposed Dual Spindle Output (180° Configuration): Built with two collinear output spindles on opposite sides of the heavy housing. This double-ended drive mechanism allows mounting two separate tool assemblies simultaneously.
• Dual Rotational Direction Options: Available in standard CW-CW dual rotation or specialized Left: CW-CW / Right: CCW-CW gear train configurations (DK90-BT50-ER25-2X models), providing full flexibility when running right-hand vs. left-hand cutting tools on opposite faces.
• Heavy-Wall QT500-7 Ductile Iron Casing: Cast from high-grade QT500-7 Ductile Iron and subjected to artificial aging and stress-relief heat treatment. The symmetrical monoblock structure balances cutting forces and dampens vibration during heavy dual-sided milling.
• Gleason Precision Ground Bevel Gears: Internal drive system utilizes Gleason ground spiral bevel gears in 20CrMnTi Alloy Steel. Carburized and quenched to HRC 58-62 and ground to ISO Grade 4 precision, ensuring gear transmission backlash ≤ 15 arcmin and noise ≤ 70 dB under full load.
• Preloaded High-Capacity Bearings: Both output spindles are supported by preloaded, high-precision P4 class angular contact ball bearings (NSK/FAG), maintaining spindle nose runout ≤ 0.005 mm on both output ends under heavy radial and axial thrust loads.

2D/3D Technical Drawings and CAD Download Center

Technical Specifications

Quality Assurance and Testing Standards

Before dispatch, every DK90-BT50-2X series angle head undergoes a 100% Quality Inspection Protocol:

• Dual Spindle Runout Inspection: Runout is measured independently on both output spindle tapers with a high-precision dial indicator, held to ≤ 0.005 mm at the spindle nose and ≤ 0.015 mm at 4D distance on both sides.
• 60-Minute Continuous Run-In: Tested continuously at full rated speed for 60 minutes. Housing temperature rise must remain ≤ 25°C above ambient temperature across both gear outputs.
• Anti-Backlash Alignment: Verified with angular encoders to confirm gear transmission backlash remains ≤ 15 arcminutes on both drive ends.

Target Industries and Industrial Applications

• Heavy Automotive Powertrains: Sequential or simultaneous side drilling, tapping, and spot-facing on opposing internal faces of large diesel engine blocks and transmission housings.
• Large Machinery & Pump Bodies: Machining parallel internal ports, seal seats, and keyways located on opposing inner walls of heavy cast iron and steel pump enclosures.
• Parallel Slotting and Dual-Side Die Features: Performing simultaneous or indexing side milling operations on opposite sides of heavy forged steel mold plates and slider guides.

CNC Machine Compatibility

Optimized for large Vertical Machining Centers (VMC), Horizontal Machining Centers (HMC), and Gantry Milling Machines. Compatible spindle interfaces include:

• Spindle Standards: BT50 / BBT50 (Double Contact) / SK50 / CAT50 / HSK100A.
• Typical Machine Brands: Compatible with Mazak, Haas, Okuma, Doosan / DN Solutions, Makino, and JTEKT / Toyoda machine tools.

B2B Industrial Packing and Shipping Standards

• Anti-Rust Protection: Coated with heavy-duty anti-rust oil and vacuum-sealed in a high-barrier VCI (Vapor Corrosion Inhibitor) bag accompanied by industrial desiccant packs.
• Shock Absorption: Cradled inside custom-contoured, high-density polyurethane protective foam inserts to isolate both output spindles and the BT50 taper from transport shock.
• Export Outer Casing: Due to the heavy unit weight (up to 14.526 kg), each unit is packed in an ISPM 15-compliant, Fumigation-Free Plywood Wooden Case with reinforced metal edge locks.
• 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 are 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 freight or ocean LCL/FCL containers depending on weight requirements.

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 heavy-duty stop block to the front face of the VMC or HMC 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 80mm, 110mm, or 135mm on BT50 machines).
3. Indicate Side Runout: Chuck a ground test arbor into one ER output collet, then repeat on the opposite output collet. Sweeping a dial indicator horizontally along both arbors, adjust the stop block’s locking bolts until parallelism is aligned within 0.015 mm per 100mm on both ends.
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 BT50 taper without physical interference from either output nose.

Technical FAQ