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Non Reversible Tapping Attachment TCNR
Auto Non Reversible Tapping Attachment TCNR
Non-Reversible Tapping Attachment: TCNR
📌 Purpose:
The TCNR Tapping Attachment is a versatile, non-reversible tapping tool designed to streamline internal threading operations across a wide range of machine setups. It’s especially popular in machine shops for its ability to handle both right-hand and left-hand tapping without requiring any modifications.
🏗️ Machine Compatibility:
Model TCNR Tapping Attachment can be seamlessly mounted on:
v Centre lathes
v Capstans and turret lathes
v Semi-automatic machines
v Drilling machines and Milling machines
v Radial drilling machines
v CNC, VMC and HMC machines
v Electric tapping machine
🛠️ TCNR Non-Reversible Tapping
Attachment Technical Data
|
Model |
Taper Shank |
Tapping Capacity |
L |
ØB |
ØD |
Approx Weight (Kg.) |
|
TCNR-1 |
MT1 / MT2 |
3 – 10 mm (1/8” – 3/8") |
100 / 110 |
55 |
38 |
1.000 Kg. / 1.100 Kg. |
|
TCNR-2 |
MT2 / MT3 |
6 – 16 mm (1/4” – 5/8") |
120 / 130 |
68 |
52.7 |
2.200 Kg. / 2.400 Kg. |
|
TCNR-3 |
MT3 |
8 – 18 mm (5/16” – 3/4") |
130 |
68 |
55 |
3.600 Kg. |
|
TCNR-4 |
MT3 / MT4 |
10 – 24 mm (3/8” – 1") |
140 / 150 |
88 |
62 |
4.300 Kg. / 4.600 Kg. |
|
TCNR-5 |
MT4 |
14 – 30 mm (9/16” – 1-1/8") |
150 |
88 |
75 |
5.300 Kg. |
📝 Important Ordering Note: > TCNR model is supplied complete with jaw set no additional spares required. Customers only need to select the appropriate MT shank to match their machine spindle.
Engineered for reliability, speed, and precision in high-performance tapping operations.
🤖 Smart Function:
|
🧭 Function |
📖 Description |
🎯 Benefit |
|
🧲 Friction-Clutch Torque Control |
Uses mechanical friction to regulate torque and disengage under excess load |
Prevents tap over-torque and protects against breakage |
|
🔧 Adjustable Torque Setting Mechanism |
Operator can tune clutch to specific tap sizes and materials |
Maximizes versatility and tap life |
🔑 Key Advantages:
v Universal Machine Fit: Universal Machine Compatibility Designed for maximum adaptability; this tapping attachment is designed for maximum flexibility across a wide range of machines. It seamlessly fits vertical drilling and milling machines with rotating and reversing spindles, while also being fully compatible with horizontal lathes, CNC, VMC, and HMC setups. Additionally, it supports radial drilling machines and electric tapping machines, making it a highly adaptable solution for both traditional workshops and modern automated systems.
v Tap Compatibility: Accepts all standard HSS tap sets and non-standard HSS taps, only the proper tap length is required.
v Material Suitability: Optimized for ductile metals like MS and CI Casting, and also suitable for Low Carbon Steel.
v Cost-Efficient Tapping: Enables fast multi-size tapping at low cost with a single attachment.
v User Requirement: For best performance, operation by a skilled machinist & semi-skilled machinist is recommended.
v High-Speed Output: Enables tapping faster than TK/MT Model and suited for rapid multi-size tapping at low cost.
v Die Holder Model DH – Versatile Threading Solution: The Die Holder Model DH transforms a standard tapping attachment into a high-efficiency threading tool with a simple die-holder insertion. This smart integration enables dual-purpose functionality tapping and threading without changing machines. It’s a cost-saving, space-efficient choice for any machine shop aiming to boost productivity with minimal setup.
⚡️Quick & Easy Installation – Model TCNR:
v Insert the tap into the attachment's chuck and align it properly.
v Lightly tighten the square nuts to hold the tap squarely in place.
v Secure the tap by tightening the chuck nut this grips the tap firmly via the jaws set.
v Adjust cup nut to control tapping load:
Ø Turn clockwise to increase load (upgrade torque).
Ø Turn anticlockwise to decrease load (downgrade torque).
v Workpiece Fixation and Tap Alignment – Critical Considerations:
Ø Secure the workpiece rigidly and firmly prior to tapping. This prevents any movement, ensures precise threading, and minimizes the risk of tool damage.
Ø Since spindle float is not available, the tap cannot self-align during entry. Therefore, it is essential that the drilled hole is perfectly aligned and matched to the tap to ensure accurate engagement and avoid mis threading.
v Blind Hole – Drill Depth Recommendation: The drilled hole should be approximately 2 to 3 mm deeper than the required tapping depth. This extra depth provides clearance for the tap's lead-in point, ensuring accurate threading and preventing bottoming out.
v Tapping Chamfer: A tapping chamfer is necessary to ensure proper thread formation and tool performance during the tapping process. It is the tapered portion at the front of a tap that gradually engages the material, distributing the cutting load across multiple teeth. This taper is essential for reducing stress on the tap, improving alignment, and producing clean, accurate threads.
Ø The type of hole - Through or Blind - determines the appropriate chamfer style:
Ø Long chamfers (Type B) are ideal for through holes and offer better surface finish and lower cutting pressure.
Ø Medium chamfers (Type C) are standard for blind holes.
Ø Short chamfers (Type E) are used when clearance is limited at the bottom of the hole.
🎯 High-Precision Features:
v Tap Safety: Advanced clutch protects taps from breakage with ultra-sensitive overload response.
v Improved Thread Quality: Gauge-Perfect Thread Quality Consistent thread geometry is ensured through precision alignment and optimal cutting dynamics achieving top-tier thread quality with every pass.
v Production-Ready: Capable of handling both batch quantities and mass production with ease.
v Jaw Set System: Equipped with a precision Jaw Set and adjustable left/right locking nuts, the attachment accommodates all standard tap sizes within its rated capacity. This ensures a secure grip, minimal vibration, and optimal tapping accuracy.
📐 Technical Operating Range:
v Threading Speed: 100–500 RPM depending on material and tap condition (Always use coolant for finish-grade threads and longer tap life.)
v Material Hardness: 50–60.5 HRA, 81–97 HRB, 0–20 HRC, [ Rockwell ]
v Max. Tapping Depth: Up to 3× to 4× the tap diameter. [ Length × Diameter ]
v L/R Nut Square Sizes:
|
Model |
L/R Nut Square (mm) |
L/R Set, Approx Weight (Kg.) |
|
TCNR-1 |
13.60 [14 mm] |
0.030 Kg. |
|
TCNR-2/3 |
17.70 [18 mm] |
0.080 Kg. |
|
TCNR-4/5 |
13.60 [24 mm] |
0.200 Kg. |
v Mounting Shank Dimensions (MT Shank GP Dia):
|
Taper |
Dia (inch) |
Dia (mm) |
|
MT1 |
0.475” |
12.0650 |
|
MT2 |
0.700” |
17.7800 |
|
MT3 |
0.938” |
23.8252 |
|
MT4 |
1.231” |
31.2674 |
|
MT5 |
1.748” |
44.3992 |
🛠️ Maintenance Note:
To extend the life of this tapping attachment or any die head, die holder, or tap chuck avoid constant use at upper or lower limit capacities. Consider rotating between two or three units for heavy-duty applications.
🎯 "Intelligent Quick-Analysis Tool Designed For Discerning Business Customers." 🎯
🛠️ TCNR Model Non - Reversible Tapping Attachment – Dimensional Range Smart Overview
|
Model |
Taper Shank |
Tapping Capacity |
TCNR - Approx Weight (Kg.) |
|
TCNR-1 |
MT1 / MT2 |
3 – 10 mm (1/8” – 3/8") |
1.000 Kg. / 1.100 Kg. |
|
TCNR-2 |
MT2 / MT3 |
6 – 16 mm (1/4” – 5/8") |
2.200 Kg. / 2.400 Kg. |
|
TCNR-3 |
MT3 |
8 – 18 mm (5/16” – 3/4") |
3.600 Kg. |
|
TCNR-4 |
MT3 / MT4 |
10 – 24 mm (3/8” – 1") |
4.300 Kg. / 4.600 Kg. |
|
TCNR-5 |
MT4 |
14 – 30 mm (9/16” – 1-1/8") |
5.300 Kg. |
🔩 TCNR Model Non - Reversible Tapping Attachment – Quick Smart Summary
📌 Purpose & Application The TCNR tapping attachment is designed for non-reversible tapping operations, ideal for machines without spindle reversal capability. It ensures precise threading in blind or through holes where reverse motion isn’t available.
🔑 Key Features
v Rigid construction for stable tapping
v Torque control to prevent tap breakage
v Suitable for vertical drilling machines and manual tapping setups
🔧 Usage Note Since it lacks auto-reverse, tap withdrawal must be done manually or with a separate reversing mechanism. Proper alignment and lubrication are essential for smooth operation.
🔩 TCNR Model Non-Reversible Tapping Attachment – Quick Smart Analysis
|
Aspect |
Details |
|
🔧 Type |
Non-Reversible Tapping Attachment TCNR – designed for manual or controlled tapping |
|
⚙️ Function |
Provides stable grip and alignment for taps without automatic reversal |
|
🔄 Mechanism |
Fixed drive mechanism; reversal must be done manually or via machine control |
|
📐 Tap Range |
Typically supports standard tap sizes, such as M3 to M30 |
|
🛠️ Applications |
Suitable for blind and through hole tapping in setups where reverse control is external |
|
✅ Advantages |
Simple design – Cost-effective – Reduces complexity – Reliable performance |
|
🏭 Use Case |
Ideal for CNC machines, drill presses, and tapping centers with reverse control features |
The TCNR Non-Reversible Tapping Attachment is a specialized tool used in drilling and tapping operations where reverse rotation is not required. It’s designed to hold taps securely and allow for efficient thread cutting in production environments.
🔑 Key Features
v Non-reversible mechanism: Ideal for machines with fixed spindle rotation.
v Safety clutch: Protects taps from breakage by disengaging under overload.
v Suitable for various tap sizes: Typically supports M3 to M30 depending on model.
🛠️ Applications
v Used in manual or CNC drilling machines where reverse motion isn’t available.
v Ideal for production tapping in mechanical and industrial setups.
v Especially useful for blind holes and hard materials where tap protection is critical.
📌 Advantages
v Reduces tap breakage
v Improves thread quality
v Speeds up tap changeover
v Compatible with multiple tap sizes and machine spindles
TOOLS AND APPLIANCES CORPORATION
BLOCK NO.: 135/2, BILESHWARPURA, P.O. CHHATRAL - 382729,
TA. KALOL ( N.G.), DIST. GANDHINAGAR.
MO. 6355213404, 6355251586,
Email :- taco@imitoolsindia.com, salestaco@imitoolsindia.com.
