JUKI DDL-8700 High-Speed Single Needle Straight Lockstitch Industrial Sewing Machine With Table and Servo Motor

Key Features and Functions

The JUKI DDL-8700 is a high-speed single-needle lockstitch sewing machine known for its performance and efficiency. It is designed for industrial needs and delivers high-quality stitches. This machine features a machine head that ensures durability and consistency. Whether working with lightweight or medium-weight fabrics, the JUKI DDL-8700 handles them effortlessly, making it a customer favorite for industrial sewing tasks—the efficiency and reliability position it as a top choice among sewists who use Juki machines. 

Technical Specifications

Understanding the technical specifications of the JUKI DDL-8700 is recommended for unerupted sewing use. This lockstitch sewing machine operates at a maximum speed of up to 5500 RPM, producing fast and efficient sewing. It is equipped with a servo motor that offers control over speed while reducing noise levels. The machine weighs approximately 61 pounds, making it sturdy yet manageable. It requires machine oil for smooth operation and has specific voltage requirements of 320VA. 

All these specifications combine to make the JUKI DDL-8700 a reliable industrial sewing machine suitable for most sewing tasks: 

• Speed: Up to 5500 RPM
• Weight: Approximately 61 lbs
• Motor: Servo motor
• Voltage Requirements: 320VA
• Noise Level: Low

Maintaining The Juki DDL-8700

Maintaining the JUKI DDL-8700 ensures its long-term performance and reliability. Regular cleaning of the machine in the bobbin area and needle prevents build-up that could cause mechanical problem like:

• Thread Tangles and Jams
• Skipped Stitches
• Inconsistent Tension
• Increased Wear and Tear
• Noise and Vibration
• Poor Fabric Handling
• Motor Strain
• Broken Needles
• Corrosion and Rust

Oil the machine regularly with the Juki Defrix Oil No. 1. Checking and adjusting the thread tension periodically will also maintain stitch quality. Here are some important maintenance tips:

• Regular Cleaning: Keep the machine and surrounding area clean.
• Oiling Procedures: Apply machine oil to designated spots as per the manual.
• Thread Tension Adjustment: Ensure proper thread tension for consistent stitching.
• Needle and Bobbin Care: Replace needles regularly and ensure the bobbin case functions correctly.

Benefits of High-Speed Sewing Machines

High-speed sewing machines like the JUKI DDL-8700 boost industrial efficiency and productivity through the following:

• Faster production: Its high speeds allow more projects to be completed in less time.
• Durability: Built to handle heavy-duty tasks with minimal downtime.
• Energy efficiency: The servo motor reduces operational costs.

These features make the JUKI DDL-8700 a valuable tool for commercial sewing operations.

Assembly and Setup Instructions

Step-by-Step Guide to Assembling the Machine

Assembling the JUKI DDL-8700 is straightforward when following the step-by-step guide provided in the manual. Begin by unboxing all components and laying them out in an organized manner. Attach the machine head to the table using the screws and tools supplied. Ensure all screws are tightened securely to avoid operational issues.

1. Install the Table:
   • Attach the legs to the table.
   • Install the pedal.
2. Mount the Machine Head:
   • Place the machine head onto the table cut-out.
   • Secure it with screws and brackets.
3. Install the Motor and Belt:
   • Mount the motor under the table.
   • Attach the belt to the machine and motor pulleys, adjusting tension.
4. Attach the Thread Stand:
   • Install the thread stand on the table.
5. Lubrication:
   • Fill the oil pan with the specified oil (Juki New Defrix Oil No.1).
6. Connect Electrical Components:
   • Ensure all electrical connections are secure.
7. Adjust Knee Lifter:
   • Adjust the knee lifter height to your preference.
8. Install Belt Cover and Bobbin Winder:
   • Secure the belt cover and bobbin winder to the machine.
9. Thread the Machine:
   • Follow the threading guide to thread the machine correctly.
10. Set the Bobbin:
    • Insert the bobbin into the bobbin case.
11. Test the Machine:
    • Run the machine to ensure everything is working smoothly.

Proper Installation on an Industrial Table

To ensure the long-term performance of your JUKI DDL-8700, proper installation is important. Begin by mounting the machine on a table designed for Servo Motor sewing machines. Carefully position the machine stand and align the head correctly. Using the provided screws, securely fasten the machine to the table. This will prolong stability during operation, allowing for precise and efficient sewing.

Initial Setup and Calibration

Proper setup and calibration of the JUKI DDL-8700 are crucial for optimal performance. Follow these detailed steps:

1. Machine Placement and Power Connection:
   • Place the machine on a stable, level surface.
   • Connect the power cord to a 110V outlet.
   • Ensure the on/off switch is easily accessible.
2. Oil the Machine:
   • Before first use, apply sewing machine oil to all designated points as indicated in the manual.
   • Run the machine for 60 seconds to distribute the oil.
3. Thread the Machine:
   • Follow the threading diagram precisely.
   • Ensure the thread passes through all guides and tension discs.
   • Thread the needle from front to back.
4. Set Up the Bobbin Case:
   • Wind the bobbin evenly using the built-in winder.
   • Insert the bobbin into the case following the thread direction indicated.
   • Place the bobbin case into the shuttle until it clicks into place.
5. Adjust Needle Height and Position:
   • Loosen the needle bar connection screw.
   • Adjust the needle bar to the correct height as specified in the manual.
   • Ensure the needle is centered in the needle plate hole.
   • Retighten the connection screw securely.
6. Set Thread Tension:
   • Start with a medium-tension setting.
   • Test on a scrap piece of fabric similar to your project material.
   • Adjust the top tension dial and bobbin case tension screw until the stitches are balanced.
7. Configure Speed Control:
   • Locate the speed control dial on the servo motor.
   • Set the maximum speed according to your experience level and project requirements.
   • Test different speeds to find the optimal setting for your work.
8. Stitch Length Adjustment:
   • Locate the stitch length dial.
   • Set the desired stitch length for your project.
   • Test on scrap fabric and adjust as needed.
9. Presser Foot Pressure:
   • Adjust the presser foot pressure according to fabric thickness.
   • Ensure it's firm enough to feed fabric smoothly but not too tight to leave marks.
10. Test and Fine-tune:
    • Sew a test piece using various stitch lengths and speeds.
    • Make minor adjustments to tension and other settings as needed.

By meticulously following these steps and performing regular maintenance, the JUKI DDL-8700 will deliver exceptional performance and durability, making it an invaluable asset in any industrial sewing setting. For additional support or queries, don't hesitate to contact Goldstar Tool for expert assistance.

Detailed Review of the JUKI DDL-8700

Performance and Efficiency Analysis

The JUKI DDL-8700 is a high-performance industrial sewing machine designed for speed and precision. This single-needle model delivers exceptional results, making it a go-to choice for professionals who value productivity. Its ability to maintain superior stitch quality across various fabrics sets it apart, offering versatility and consistent performance regardless of the material being sewn.

Comparison of Juki DDL-8700 vs. Other Juki Machines

Troubleshooting Common Issues

Addressing Thread Tension Problems

Thread tension issues are familiar with any sewing machine, including the JUKI DDL-8700. To address these problems:

• Check Thread Path: Ensure the thread is correctly routed according to the manual.
• Adjust Tension Settings: Use the tension adjustment dial to find the best setting for your fabric.
• Use Quality Thread: Poor-quality thread can cause inconsistent tension.

Regular maintenance and proper setup can minimize thread tension problems, making sewing smoother and more efficient.

Fixing Needle and Bobbin Issues

Needle and bobbin issues can disrupt sewing operations. To fix these problems:

• Needle Replacement: Change needles regularly to avoid needle-related problems.
• Bobbin Case Inspection: Ensure the bobbin case is clean and aligned correctly.
• Adjust Bobbin Tension: Adjust the bobbin tension if the bobbin thread is not feeding correctly.

Maintaining these components helps ensure consistent sewing performance and extends the life of the JUKI DDL-8700.

Resolving Motor Malfunctions

A systematic approach can save you time and frustration when troubleshooting your sewing machine motor. Start by checking the basics: ensure all connections are secure and the power source functions correctly. If you're experiencing issues with speed control, inspect the foot pedal for wear or damage.

Unusual noises or vibrations often indicate a need for lubrication or a misaligned belt. Consult your machine's manual for proper lubrication points and belt tension specifications in such cases. Verify that the control box settings match your machine's requirements for Servo motors.
If the motor fails to start, examine the carbon brushes for wear and replace them if necessary. Remember, electrical issues can be dangerous - if you're unsure, it's best to consult an authorized Juki repair shop. Regular maintenance, including cleaning and proper storage, can prevent common motor problems and extend your machine's lifespan.

Enhancing Your Sewing Experience

Choosing the Right Needles and Threads

Selecting the suitable needles and threads boosts your sewing machine's performance. When using the JUKI DDL-8700, a heavy-duty sewing machine, match needles and threads to your fabric. Opt for stronger needles and robust threads for thicker materials to avoid breakage. Proper selection of these items improves your sewing techniques and overall machine efficiency.

• Needle Bar - Juki #229-06002
• Needle Bar - JUKI #B-1401-552-A00
• Needle Bar A - JUKI #113-01009

Accessory Recommendations for Optimal Use

Maximize your industrial sewing machine's capabilities with these accessories for the JUKI DDL-8700:

• Needles: Different sizes for various fabrics.
• Bobbin and Spool: High-quality options to ensure consistent stitching.
• Compatible Attachments: Specialized feet and guides for detailed work.

Upgrading with Compatible Attachments

Enhance your JUKI DDL-8700's performance and versatility with an explicitly designed range of OEM attachments for the DDL-8700. These upgrades can significantly boost your productivity and expand the machine's capabilities:

• Lockstitch Feet: Improve precision and versatility
  • Straight stitch foot: For perfect straight stitches on various fabrics
  • Zipper foot: Allows for easy zipper installation
  • Blind hem foot: Creates nearly invisible hems
  • Walking foot: Ensures even feed for multiple layers or slippery fabrics
• Heavy-Duty Motors: Increase speed and power for industrial use
  • Servo motors: Offer precise speed control and energy efficiency
    
  • Clutch motors: Provide consistent high-speed operation
• Needle Systems:
  • DBx1 needles: Standard for most fabrics
  • DBx5 needles: For heavier materials
    
• Thread Stand:
  • Large-capacity thread stand: Accommodates industrial-sized thread cones
• Specialized Guides:
  • Edge guide: Ensures consistent seam allowances
    
  • Tape binding attachment: For applying binding tape in one operation
• Lighting:
  • LED lighting kit: Improves visibility in the sewing area
    

These attachments enhance performance and versatility and make the JUKI DDL-8700 suitable for a wide range of industry applications, from garment manufacturing to upholstery work. By selecting the right combination of attachments, you can easily customize your machine to meet specific production needs and tackle more challenging projects.

JUKI DDL-8700 MACHINE FEATURES:

• The JUKI DDL-8700’s low tension sewing mechanism flexibly responds to a wide variety of fabrics and produces a beautiful seam with uniform quality.
• Improved maintainability is guaranteed on the upgraded machine head.
• Increase productivity with the presser foot with a higher lift, a light touch stitch dial and throat plate with marker groves to assist with seam allowance precision.

DOWNLOADS:

• Instruction Manual - JUKI DDL-8700
• Catalog - JUKI DLL-8700
• Parts List - JUKI DDL-8700
• Caution For Safety - JUKI DDL-8700
• Setup Sheet - JUKI DDL-8700

Safety Tips for the DDL-8700

Always turn off the machine before threading or doing anything that could cause injury, such as threading, oiling, changing a needle, or installing a bobbin for sewing.

The 8700 has a finger guard on the shaft to prevent injury and needle breakage. If you’re having trouble threading the machine, we suggest getting a pair of long tweezers to help.

Keep your hands, hair, and anything else that could become caught away from the machine's bobbin hook, needle area, and other moving parts.

Continuously operate the 8700 with a whole pan of oil. Check your machine’s oil pan regularly before and after use to ensure smooth operation and prevent damage.

And, of course, read the accompanying instruction manual, safety manual, and setup sheet with your machine.

U.S. WARRANTY:

90 Days labor on defects in materials and workmanship.

** Head Only option does not include the table, legs, Servo Motor, and LED Lamp. No assembly or residential charges necessary.

DISCLAIMER: DUE TO THE WEIGHT AND SHIPPING METHODS USED FOR INDUSTRIAL MACHINES THEY MAY EXPERIENCE MARRING AND SCRATCHES DURING SHIPPING. THIS WILL NOT AFFECT THE OPERATION OF THE MACHINE.

PARTS & ACCESSORIES for the JUKI DDL-8700