Reversible Tapping Attachment HR

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Reversible Tapping Attachment HR

Auto Reversible Tapping Attachment HR

Reversible Tapping Attachment: HR

📌 Purpose:

The HR Tapping Attachment is a versatile, auto-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 HR Tapping Attachment can be seamlessly mounted on:

v  Drilling machines and Milling machines

v  Radial drilling machines [ In Manual Mode ]

 

🎬 Video Highlight Summary:

This video provides detailed instructions on how to properly install and operate a specific tapping attachment for a machine spindle. It outlines the step-by-step process for mounting various components, such as the arbor, stop arm, and rubber collet, ensuring secure and accurate setup. The instructions emphasize correct tab insertion, torque adjustment using a cup nut, and the importance of lubrication for the taper. Furthermore, the text highlights operational procedures like engaging the stop bar and the clutch's function in preventing tab breakage, while also advising on troubleshooting dull tabs and maintaining recommended tapping speeds for optimal performance and user safety.

🛠️ HR Reversible Tapping Attachment Technical Data

Model

Tap. Shk.

Fem. Shk.

Tapping Capacity

Std. Coll.

Opt. Coll.

L

ØB

ØD

ØC

Ex

Ne

C

App.We. (Kg.)

HR-1

MT1/ MT2

JT 33

1.4 – 7 mm (1/16”–1/4")

S161 S171

S151

140/ 150

55

20

103

9

2.25

4

0.900/ 1.000

HR-2

MT2/ MT3

5/8”– 16 UN

3 – 12 mm (1/8”–1/2")

S212 S222

S232

200/ 220

68

29

127

14

3

2

2.000/ 2.100

HR-2

MT2/ MT3

JT6

3 – 12 mm (1/8”–1/2")

S212 S222

S232

200/ 220

68

29

127

14

3

2

2.100/ 2.200

HR-3

MT3/ MT4

M20 P2.5

8 – 20 mm (5/16”–3/4")

S413 S453

S433

230/ 240

83

37.9

167

17

4

4

3.500/ 3.800

HR-4

MT4/ MT5

M20 P2.5

14 – 30 mm (9/16”–1-1/8")

S613 S623

—

265/ 280

110

51.5

268

17

6

4

7.400/ 8.300

 📑 Table Note : Tap. Shk. = Taper Shank, Fem. Shk. = Female Shank, Std. Coll. = Standard Collets, Opt. Coll. = Optional Collets, Ex = Expansion, Ne = Neutral, C = Compression, App. We. = Approx Weight (Kg.) 

📝 Important Ordering Note: > HR Supplied with Standard Rubber Collets without Optional Rubber Collets.

Engineered for reliability, speed, and precision in high-performance tapping operations.

🤖 Smart Function:

🧭 Function	📖 Description	🎯 Benefit
📐 Dynamic Alignment Correction	Spindle float allows the tap to align naturally during entry	Ensures accurate, centered threading
🎛️ Smooth Thread Engagement	Reduces lateral forces at the start of tapping	Minimizes deflection and chatter
🔁 Pitch Variation Compensation	Adjusts for discrepancies between spindle feed rate and thread pitch	Prevents mismatch and thread distortion
🛡️ Tap & Thread Protection	Absorbs pressure variations and misalignments	Reduces tap breakage and improves finish
⚙️ Support for Harder Materials	Axial compliance eases stress during tapping in tough materials	Enhances tool life and threading reliability
🧲 Ball-Clutch Torque Control	Uses precision ball bearings to regulate torque precisely and consistently	Prevents tap over-torque, safeguards tool integrity
🔧 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: Works on all vertical drilling machines and milling machines with rotating spindles whether reversing or non-reversing. As well as Radial drilling machines [ In Manual Mode ].

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, CI Casting, Low Carbon Steel, Aluminium and Copper, and also suitable for 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 TCN 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 HR:

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 collet.

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  Ensure Firm Workpiece Fixation During Tapping: Secure the job rigidly and firmly before tapping to prevent movement, ensure accurate threading, and avoid tool breakage.

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  Stop Arm HR (Mandatory For Reversing Mechanism) – Stopper Installation Possibilities: There are two possible methods for setting the stopper

Ø  Upper Side Installation: Mount a vertical rod on the Drill Setting Bar located on the upper side of the machine.

Ø  Bottom Side Installation: Mount a vertical rod in the T-slot at the bottom side of the machine.

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  Reversible Operation: Taps right- or left-hand threads without any modification.

v  Tap Safety: Advanced ball-clutch protects taps from breakage with ultra-sensitive overload response.

v  Smooth Transmission: Ball-drive system powers the tap with silent forward and reverse engagement.

v  Improved Thread Quality: Axial float and cushioned drive prevent cross-threading and ensure gauge-perfect threads.

v  Rapid Retraction: Planetary reverse mechanism provides 75% faster retraction than the feed rate.

v  Consistent Depth Control: Neutral mechanism ensures precise tapping depth every time.

v  Production-Ready: Capable of handling both batch quantities and mass production with ease.

v  Rubber Collet System: Equipped with a precision rubber collet 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: 300–1000 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.)
HR-1	9.5 [10 mm]	0.015 Kg.
HR-2	13.60 [14 mm]	0.030 Kg.
HR-3	17.70 [18 mm]	0.080 Kg.
HR-4	13.60 [24 mm]	0.200 Kg.

v  Mounting Shank Dimensions (MT Shank GP Dia):

Taper	Dia (inch)	Dia (mm)
MT1	0.475”	12.065
MT2	0.7”	17.78
MT3	0.938”	23.8252
MT4	1.231”	31.2674
MT5	1.748”	44.3992

v  Jacob’s Tapper Shank Dimensions (JT Shank GP Dia):

Taper	Dia (inch)	Dia (mm)
JT1	0.384”	9.7536
JT2	0.559”	14.1986
JT3	0.811”	20.5594
JT4	1.124”	28.5496
JT6	0.676”	17.1704
JT33	0.624”	15.8496

🛠️ 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." 🎯

 

🛠️ HR Model Reversible Tapping Attachment – Dimensional Range Smart Overview

Model	Taper Shank	Female Shank	Tapping Capacity	Standard Collets	Optional Collets	HR - Approx Weight (Kg.)
HR-1	MT1 / MT2	JT 33	1.4 – 7 mm (1/16” – 1/4")	S161 (2.5–4.5 mm), S171 (4.5–6.5 mm)	S151 (1–2.5 mm)	0.900 Kg. / 1.000 Kg.
HR-2	MT2 / MT3	5/8” – 16 UN	3 – 12 mm (1/8” – 1/2")	S212 (3.5–6.5 mm), S222 (6.5–10 mm)	S232 (2–4.5 mm)	2.000 Kg. / 2.100 Kg.
HR-2	MT2 / MT3	JT6	3 – 12 mm (1/8” – 1/2")	S212 (3.5–6.5 mm), S222 (6.5–10 mm)	S232 (2–4.5 mm)	2.100 Kg. / 2.200 Kg.
HR-3	MT3 / MT4	M20 P2.5	8 – 20 mm (5/16” – 3/4")	S413 (4.5–10 mm), S453 (10–15 mm)	S433 (2.8–7 mm)	3.500 Kg. / 3.800 Kg.
HR-4	MT4 / MT5	M20 P2.5	14 – 30 mm (9/16” – 1-1/8")	S613 (9–16 mm), S623 (16–23 mm)	—	7.400 Kg. / 8.300 Kg.

 

🔩 HR Model Reversible Tapping Attachment – Quick Smart Summary

🔑 Key Features

v  Auto-Reverse Mechanism: Uses planetary gears for rapid and smooth tap retraction.

v  Axial Float: Allows the tap to self-align, improving thread accuracy and reducing breakage.

v  Ball-Clutch Safety System: Prevents tap damage by disengaging under excess torque.

v  Versatile Compatibility: Designed for vertical drilling machines with non-reversing spindles.

⚙️ Operating Highlights

v  Torque Adjustment: Controlled via a cup nut and grub screw for precise clutch calibration.

v  Through & Blind Hole Tapping: Supports both with neutral disengagement and depth control.

v  Lubrication & Maintenance: Requires periodic greasing (~every 600 hours) and cleaning of bearings/gears.

v  Cutting Fluid Use: Emphasizes high-pressure lubrication for heat dissipation and chip clearance.

📌 Safety & Performance Tips

v  Clamp workpieces securely never hold by hand.

v  Use sharp taps and monitor clutch slippage as an indicator of wear.

v  Recommended max operating speed: 1000 RPM.

 

🔩 HR Model Reversible Tapping Attachment – Quick Smart Analysis

Aspect	Details
🔧 Type	Reversible Tapping Attachment HR – built for heavy-duty tapping operations
⚙️ Function	Enables internal threading with automatic reverse for safe and efficient tapping
🔄 Mechanism	Heavy-duty reversing ball clutch ensures smooth withdrawal at thread depth
📐 Tap Range	Supports a broad range of tap sizes, typically M1.4 to M30
🛠️ Applications	Suitable for blind and through hole tapping in industrial and high-load setups
✅ Advantages	Robust construction – Minimizes tap breakage – Delivers consistent thread quality
🏭 Use Case	Drilling machines and Milling machines

v  Purpose: Automatically monitors tapping performance and detects anomalies such as torque spikes, misalignment, or dull tap behavior.

v  Functionality:

Ø  Evaluates tap engagement and withdrawal speed.

Ø  Assesses clutch response to prevent tap breakage.

Ø  Flags inconsistent thread profiles or feed mismatches.

v  Benefits:

Ø  Reduces downtime by identifying issues early.

Ø  Improves thread quality and tool life.

Ø  Supports predictive maintenance and operator feedback.

This feature is especially useful in high-volume or precision tapping environments where consistency and tool protection are critical.

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.