Reversible Tapping Attachment HRF

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Reversible Tapping Attachment HRF

Auto Reversible Tapping Attachment HRF

Reversible Tapping Attachment: HRF

📌 Purpose:

The HRF 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 HRF 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 a detailed instructional guide on the proper operation and maintenance of a tapping attachment, specifically the MODEL HRF. It outlines the step-by-step process for mounting and securing the stop arm and adapter, emphasizing the importance of checking for oil and grease on the taper before assembly. The guide also explains how to adjust the torque using the cap nut and grub screw, referencing graduations for future setup efficiency. Crucially, it highlights safety precautions such as keeping the stop arm secure and avoiding over-torquing to prevent tap breakage, while also providing guidance on recommended tapping speeds and the attachment's maximum RPM. Finally, it describes the clutch mechanism's function in preventing tap breakage and the operator's role in controlling depth and making quick upward movements.

 

🛠️ HRF Reversible Tapping Attachment Technical Data

Model

Tap. Shk.

Fem. Shk.

Tapping Capacity

QA

L

ØB

ØD

ØC

Ex

Ne

Co

Approx Weight (Kg.)

HRF-1

MT1/ MT2

JT 33

1.4 – 7 mm (1/16”–1/4")

QA-0

170/ 170

55

23

103

9

2.25

4

1.000 Kg./ 1.100 Kg.

HRF-2

MT2/ MT3

5/8” – 16 UN

3 – 12 mm (1/8”–1/2")

QA-1

180/ 180

68

30

127

14

3

2

1.900 Kg./ 2.000 Kg.

HRF-2

MT2/ MT3

JT6

3 – 12 mm (1/8”–1/2")

QA-1

180/ 180

68

30

127

14

3

2

2.000 Kg./ 2.100 Kg.

HRF-3

MT3/ MT4

M20 P2.5

8 – 20 mm (5/16”–3/4")

QA-40

190/ 200

83

42

167

17

4

4

3.600 Kg./ 3.900 Kg.

HRF-4

MT4/ MT5

M20 P2.5

14 – 30 mm (9/16”–1-1/8")

QA-3

220/ 220

110

72

268

17

6

4

8.300 Kg./ 9.200 Kg.

📑 Table Note : Tap. Shk. = Taper Shank, Fem. Shk. = Female Shank, QA = Suitable Tap Adaptor, Ex = Expansion, Ne = Neutral, Co = Compression,

📝 Important Ordering Note: > Each tap size requires a separate QA model tap adaptor. > When placing an order, please specify the following details: > - Tap Size > - Tap Shank Diameter > - Square Size [ HRF Supplied without (QA) Tap Adaptor ].

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 IS standard HSS tap sets.

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 semi-skilled machinist is recommended.

v  High-Speed Output: Enables tapping faster than TCNF 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 HRF:

v  The HRF model features a smartly engineered Quick Change Tap Adaptor (QA) system that allows rapid and effortless tap replacement.

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 HRF (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  Amazing Tap-Changing Efficiency: The HRF model features a smartly engineered Quick Change Tap Adaptor (QA) system that allows rapid and effortless tap replacement. This not only minimizes downtime but also enhances operational efficiency perfect for fast-paced production environments where time truly is money.

📐 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  Quick Change Tap Adaptor (QA) – Outer Diameter Specifications :

Adaptor Type	Outer Diameter	Compatible HRF Model	QA, Approx Weight (Kg.)
QA-0	13 mm	HRF1	0.080 Kg.
QA-1	19 mm	HRF2	0.100 Kg.
QA-40	26 mm	HRF3	0.300 Kg.
QA-3	48 mm	HRF4	1.000 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

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." 🎯

 

🛠️ HRF Model Reversible Tapping Attachment – Dimensional Range Smart Overview

Model	Taper Shank	Female Shank	Tapping Capacity	Suitable Tap Adaptor	HRF - Approx Weight (Kg.)
HRF-1	MT1 / MT2	JT 33	1.4 – 7 mm (1/16” – 1/4")	QA-0	1.000 Kg. / 1.100 Kg.
HRF-2	MT2 / MT3	5/8” – 16 UN	3 – 12 mm (1/8” – 1/2")	QA-1	1.900 Kg. / 2.000 Kg.
HRF-2	MT2 / MT3	JT6	3 – 12 mm (1/8” – 1/2")	QA-1	2.000 Kg. / 2.100 Kg.
HRF-3	MT3 / MT4	M20 P2.5	8 – 20 mm (5/16” – 3/4")	QA-40	3.600 Kg. / 3.900 Kg.
HRF-4	MT4 / MT5	M20 P2.5	14 – 30 mm (9/16” – 1-1/8")	QA-3	8.300 Kg. / 9.200 Kg.

 

🔩 HRF 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  Quick Tap Change: HRF models feature a push-to-lock adaptor system for fast tool swaps.

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.

 

🔩 HRF Model Reversible Tapping Attachment – Quick Smart Analysis

Aspect	Details
🔧 Type	Reversible Tapping Attachment HRF – engineered for high-speed, heavy-duty tapping
⚙️ Function	Performs internal threading with automatic reverse to prevent tap damage
🔄 Mechanism	Reinforced reversing ball clutch activates at thread depth for smooth withdrawal
📐 Tap Range	Accommodates a wide range of tap sizes, typically M1.4 to M30
🛠️ Applications	Suitable for blind and through hole tapping in industrial and high-load environments
✅ Advantages	High-speed efficiency – Durable build – Reduces tap breakage – Enhances thread finish
🏭 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.