Thread tapping is one of the most common but challenging operations in metalworking. Broken taps ruin workpieces. Manual tapping tires tires operators quickly. Inconsistent thread quality leads to rejected parts. For manufacturers producing nuts, fittings, and components in volume, these problems multiply across thousands of parts. An auto tapping machine eliminates these headaches through precise mechanical control. The lead-screw mechanism guides the tap with perfect synchronization. Every thread matches the gauge. No breakage. No rejects.
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Auto Tapping Machine Complete Product Parameter Table
We offer three models of this equipment. All units feature a lead-screw design with floating tap holders.
| Parameter | YG-20/40 | YG-25/50 | YG-30/60 |
|---|---|---|---|
| Tapping Capacity (Coarse) | M6-M20 | M6-M25 | M10-M30 |
| Tapping Capacity (Fine) | M6-M40 | M6-M50 | M10-M60 |
| Spindle Diameter | 30mm | 35mm | 40mm |
| Spindle Travel (Max.) | 110mm | 110mm | 125mm |
| Column Diameter | 100mm | 100mm | 110mm |
| Spindle Center to Column | 216mm | 216mm | 250mm |
| Table Shape | Rectangular | Rectangular | Square |
| Table Size (L×B) | 405×225mm | 405×225mm | 760×590mm |
| Working Area | 330×150mm | 330×150mm | 620×260mm |
| Floor Area (L×B) | 1220×760mm | 1220×760mm | 1400×620mm |
| No. of Speeds | 2 (AC drive optional) | 2 (AC drive optional) | AC Drive |
| Motor | 2 HP/1440 rpm | 2 HP/1440 rpm or 2 HP/900rpm | 3 HP/1440 rpm |
| Total Height | 1900mm | 1900mm | 2100mm |
| Total Weight (Approx.) | 350kg | 400kg | 550kg |
| Max. Tap Shank | 20mm | 30mm | 40mm |
| Coolant Tank Capacity | 40 Liters | 40 Liters | 40 Liters |
Find the Right Model for Your Project
Standard Equipment Included:
- Floating tap holder (2 pieces)
- Tap collets (2 pieces, any size)
- Lead screw (2 pieces, fitted)
- Spanners and Allen keys
Common Specifications:
- Complete belt cover
- Motor cover within frame
- Coolant system with 40L tank
- Counter meter
- Safety cut-off limit switches
- Phase preventer
- Various pitch sizes (metric and unified)
We provide free application advice based on your thread sizes and production volume.
Contact YG Machinery today via WhatsApp, email, or the website form. Every machine includes a warranty and remote support.【WhatsApp/WeChat/Phone】+86 183 3715 2861
CNC Tapping Machine: 5 Features That Prevent Tap Breakage
A CNC tapping machine from YG includes features that protect your taps and workpieces. Here is what buyers get.
1. Safety cut-off limit switches. The machine stops automatically when the tap reaches the preset depth. No over-travel. No broken taps. This feature saves thousands of dollars in tooling costs each year.
2. Lead-screw guidance. The mechanical lead screw synchronizes tap rotation with feed rate. One rotation equals one pitch. This precision eliminates thread stripping and gauge failures.
3. Coolant system. A 40-liter coolant tank floods the cutting zone. Coolant reduces friction and heat. Taps last longer. Thread quality improves. The system is standard on all models.
4. Phase preventer. The machine will not run if the electrical phase is incorrect. This protects the motor and controls from damage. A simple feature that prevents expensive repairs.
5. Counter meter. The built-in counter tracks production. You know exactly how many threads you have cut. Plan maintenance and track efficiency with real data.
Thread Tapping Machine: 5 Pitch Options for Any Standard
A thread tapping machine from YG handles metric and unified pitches. Here is the range.
YG-20/40 supports:
- Metric: 0.8, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5
- Unified: 26, 24, 20, 19, 18, 16, 14, 12 TPI
YG-25/50 supports:
- Metric: 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 3.5
- Unified: 24, 20, 19, 18, 16, 14, 12, 11 TPI
YG-30/60 supports:
- Metric: 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 3.5, 4.0
- Unified: 24, 20, 19, 18, 16, 14, 12, 11, 10, 8 TPI
This range covers most standard fastener threads. Changeover takes minutes with the included gear sets. No special tools required.
Tapping Equipment: 4 Applications in Manufacturing
Tapping equipment from YG finds use across many industries. Here are the most common applications.
- Fastener manufacturing. Nuts, bolts, and threaded inserts require precise internal threads. The machine handles M6 to M60 threads. A fastener factory in India uses the YG-25/50 to produce 5,000 nuts per shift with zero rejects.
- Automotive parts. Engine blocks, transmission housings, and suspension components all need threaded holes. The 110mm spindle travel handles deep holes. The coolant system keeps tools cool during long runs.
- Plumbing and fittings. Brass and steel fittings require clean threads for leak-free connections. The machine handles both metric and unified pitches. One operator manages two machines simultaneously.
- Aerospace and defense. Precision threaded components demand absolute accuracy. The lead-screw design ensures every thread meets the gauge. No deviations. No inspection failures.
A Real-World Case: Fastener Factory Cuts Rejects by 95%
A fastener manufacturer in India purchased a YG-25/50 auto tapping machine from YG in 2024. They had been using manual tapping for M10-M20 threads. Each operator produced 300 parts per shift. Reject rates ran at 8-10% due to broken taps and stripped threads. Skilled operators were difficult to find and expensive to keep.
The new machine arrived with a floating tap holder, collets, and lead screws. The crew trained for one day on setup and operation. The safety cut-off limit switches and coolant system were features that their old equipment lacked.
In the first month, production jumped from 300 to 1,200 parts per operator per shift. Reject rates dropped from 8% to 0.4%. The machine paid for itself in four months through reduced tooling costs and scrap. The owner purchased two more units for his other production lines.
FAQ About Auto Tapping Machine
The YG-20/40 handles M6-M40 fine pitch and M6-M20 coarse pitch. The YG-25/50 handles M6-M50 fine and M6-M25 coarse. The YG-30/60 handles M10-M60 fine and M10-M30 coarse.
Yes. The safety cut-off limit switches stop the spindle at the preset depth. This prevents damage to the tap and the workpiece.
The main differences are tapping capacity, spindle diameter, weight, and working area. Larger models handle bigger threads and heavier workpieces.
Yes. Each unit includes two floating tap holders, two tap collets of any size, and two fitted lead screws. Spanners and Allen keys are also included.
Yes. The machine uses exchangeable gears for pitch changes. The included gears cover the most common metric and unified pitches. Changeover takes 5-10 minutes.
