UBACK AND UCHAMF INSERTS
Ultimate Back: Precision Back Counter Solutions
The Ultimate Back line brings together the innovative UX tool-holders and USPOT/UCHAMF inserts to redefine machining precision. Featuring a patented hydraulic mechanism that ingeniously uses the machine’s coolant liquid, this system delivers exceptional control over insert movement. The result? Unparalleled accuracy, repeatability, and streamlined operations for back counterboring, back countersinking, and back spot-facing tasks.
With its advanced engineering, Ultimate Back eliminates the need for workpiece rotation, effortlessly performing operations in a single pass while significantly boosting productivity and efficiency.
Highlights of Ultimate Back
- UX Tool-Holders with Hydraulic Precision: The UX tool-holders feature a hydraulic mechanism powered by coolant pressure, ensuring smooth, accurate, and repeatable insert movement.
- USPOT and UCHAMF Inserts: Designed to handle specific machining needs, these inserts deliver outstanding results in back spot-facing, back counterboring, and back countersinking operations.
- Single-Pass Efficiency: Eliminate workpiece rotation and achieve precise machining in one seamless pass.
- Industry-Grade Reliability: Engineered to meet the rigorous demands of aerospace, automotive, medical, and electronics industries.
- Time and Cost Savings: Reduced cycle times and optimized operations ensure significant productivity gains.
Benefits of Ultimate Back
- Efficient Single Operation: Perform chamfering and counterboring through holes in one pass without rotating the workpiece.
- Customizable Solutions: UX tool-holders support tailored configurations with USPOT and UCHAMF inserts, offering options for coatings, chip-formers, corner radii, and more.
- Easy insert replacement with one type screw and no need for special jig.
- Innovative Hydraulic Control: UX tool-holders provide precise and consistent operation while simplifying insert replacement.
- Superior Chip Management: Prevent interruptions with excellent chip control for smooth and efficient machining.
- Cost-Effective for All Scales: From small-scale projects to high-volume production, this system delivers exceptional value.
- Automation-Ready Design: Seamlessly integrates into automated manufacturing systems for maximum efficiency.
- Coolant-Driven Mechanism: Operates smoothly with internal coolant, air or emulsion control (minimum 6 bar / 90 PSI), ensuring consistent results.
- Pilot-Hole Protection: The protective insert design safeguards the integrity of the pilot hole during pass-through operations.
- Versatile Applications: UX tool-holders are compatible with a wide range of USPOT and UCHAMF inserts, making them suitable for diverse machining tasks.
- Wide Range of Sizes: The UX tool-holders are available in diameters from Ø8 mm to Ø25 mm (.315-.984”) with various chamfer angles and spotface diameters.
Why Ultimate Back Stands Out
The Ultimate Back system combines the precision of UX tool-holders with the versatility of USPOT and UCHAMF inserts to deliver unparalleled performance. Its innovative design optimizes machining processes, reduces cycle times, and achieves flawless results in high-demand industries.
Whether you’re working in aerospace, automotive, medical, or electronics sectors, Ultimate Back is the ultimate choice for back spot-facing, back counterboring, and back countersinking operations.
What is DURASHIELD?
When you see this logo on our tools, you can trust that you’re holding a product built for excellence. DURASHIELD represents NOGA MT’s premium line of tool-holders, engineered to excel in the most demanding environments. Delivering exceptional performance, extended tool life, and unmatched reliability, DURASHIELD tool-holders feature advanced corrosion resistance and superior structural integrity. They set a new benchmark for strength, durability, and precision, redefining industry standards.
MT DURASHIELD Offering:
Strength: Ensures tools can withstand heavy loads
Toughness: Maintains reliability under demanding conditions
Wear Resistance: Extends tool lifespan and reduces costs
Machinability: Facilitates the design of precise tool-holders
Heat Resistance: Maintains performance at high temperatures
Corrosion Resistance: Ideal for harsh environments
The NOGA MT DURASHIELD family of tool-holders undergoes a passivation process to enhance corrosion resistance. This process eliminates the need for additional coatings and chemicals, simplifies production, reduces environmental impact, and provides a more eco-friendly corrosion protection solution.
UBACK Series and Range with UCHAMF Inserts for Back Countersink or Chamfering applications:
The UBACK line is organized into series or groups, with each series optimized for a specific pilot-hole range:
Series | Ød Pilot-Hole Range mm /inch | ØDmax. Countersink Range for 82° mm /inch | ØDmax. Countersink Range for 90° mm /inch |
B | 8.0–10.0 /0.315–0.394″ | 8.5–20.0 /0.335–0.787″ | 8.5–19.0 /0.335–0.748″ |
C | 11.0–13.0 /0.433–0.512″ | 11.5–28.0 /0.453–1.102″ | 11.5–26.0 /0.453–1.024″ |
D | 14.0–16.0 /0.551–0.630″ | 14.5–34.0 /0.571–1.339″ | 14.5–31.0 /0.571–1.220″ |
E | 17.0–19.0 /0.669–0.748″ | 17.5–40.0 /0.689–1.575″ | 17.5–37.0 /0.689–1.457″ |
F | 20.0–22.0 /0.787–0.866″ | 20.5–43.0 /0.807–1.693″ | 20.5–40.0 /0.807–1.575″ |
G | 23.0–25.0 /0.906–0.984″ | 23.5–46.0 /0.925–1.811″ | 23.5–43.0 /0.925–1.693″ |
The UCHAMF inserts are offered as standard (82°, 90° countersink angles) or semi-standard solutions tailored to meet customer-specific applications.
It is mandatory to match the tool-holder series with the corresponding insert series.
UBACK Standard Tool-Holders with UCHAMF Inserts(mm)
LTB2 – Length To Bottom / RFC – Relief For Cutting / FL – Folding Length
Ødmin. Pilot Hole | Tool-Holder SKU | Tool-Holder Description | ØDS h6 | FL | RFC | H | L | L1 | LTB2 (1) UCHAMF | Insert Clamping Screw M*P*L (mm) | Series (2) |
8 | UX2080 | UX-d080-B-C16-H62-L115 | 16 | 17 | 43 | 62 | 115 | 53 | 8.25 | UX0005/ M2.5×0.35x7B | B |
9 | UX2090 | UX-d090-B-C16-H62-L115 | 16 | 17.8 | 43 | 62 | 115 | 53 | 8.25 | B | |
10 | UX2100 | UX-d100-B-C16-H62-L115 | 16 | 18.8 | 43 | 62 | 115 | 53 | 8.25 | B | |
11 | UX3110 | UX-d110-C-C16-H80-L133 | 16 | 27 | 52 | 80 | 133 | 53 | 13.6 | UX0006/ M3x0.35x10C | C |
12 | UX3120 | UX-d120-C-C16-H80-L133 | 16 | 27.3 | 52 | 80 | 133 | 53 | 13.6 | C | |
13 | UX3130 | UX-d130-C-C16-H80-L133 | 16 | 28 | 52 | 80 | 133 | 53 | 13.6 | C | |
14 | UX4140 | UX-d140-D-C20-H105-L158 | 20 | 32.5 | 72.5 | 105 | 158 | 53 | 15.3 | UX0007/ M3x0.35x13D | D |
15 | UX4150 | UX-d150-D-C20-H105-L158 | 20 | 32.5 | 72.5 | 105 | 158 | 53 | 15.3 | D | |
16 | UX4160 | UX-d160-D-C20-H105-L158 | 20 | 32.5 | 72.5 | 105 | 158 | 53 | 15.3 | D | |
17 | UX5170 | UX-d170-E-C20-H115-L170 | 20 | 38.5 | 76.5 | 115 | 170 | 55 | 18 | UX0008/ M3x0.35x16E | E |
18 | UX5180 | UX-d180-E-C20-H115-L170 | 20 | 38.5 | 76.5 | 115 | 170 | 55 | 18 | E | |
19 | UX5190 | UX-d190-E-C20-H115-L170 | 20 | 38.5 | 76.5 | 115 | 170 | 55 | 18 | E | |
20 | UX6200 | UX-d200-F-C25-H120-L175 | 25 | 43.5 | 76.5 | 120 | 175 | 55 | 20 | UX0009/ M4x0.5x19F | F |
21 | UX6210 | UX-d210-F-C25-H120-L175 | 25 | 43.5 | 76.5 | 120 | 175 | 55 | 20 | F | |
22 | UX6220 | UX-d220-F-C25-H120-L175 | 25 | 43.5 | 76.5 | 120 | 175 | 55 | 20 | F | |
23 | UX7230 | UX-d230-G-C25-H120-L175 | 25 | 48 | 72 | 120 | 175 | 55 | 22 | UX0010/ M4x0.5x21G | G |
24 | UX7240 | UX-d240-G-C25-H120-L175 | 25 | 48 | 72 | 120 | 175 | 55 | 22 | G | |
25 | UX7250 | UX-d250-G-C25-H120-L175 | 25 | 48 | 72 | 120 | 175 | 55 | 22 | G |
(1) The LTB parameter varies between USPOT and UCHAMF inserts
(2) The insert series must match the series of the tool holder.
Note: Tool-holders and inserts are sold separately.
- UX Tool-holders spare parts:
- SP0105 Hex L-Key 0.050" 1+1/16/1+9/16
- UX0003 Pin for Insert Replacement
- Insert Clamping Screw – according to the table above
UBACK Standard Tool-Holders with UCHAMF Inserts(Imperial)
LTB2 – Length To Bottom / RFC – Relief For Cutting / FL – Folding Length
Ødmin. Pilot Hole | Tool-Holder SKU | Tool-Holder Description | ØDS h6 | FL | RFC | H | L | L1 | LTB2 (1) UCHAMF | Insert Clamping Screw M*P*L (mm) | Series (2) |
0.315 | UX2080 | UX-d080-B-C16-H62-L115 | 0.630 | 0.669 | 1.693 | 2.441 | 4.528 | 2.087 | 0.325 | UX0005/ M2.5×0.35x7B | B |
0.354 | UX2090 | UX-d090-B-C16-H62-L115 | 0.630 | 0.701 | 1.693 | 2.441 | 4.528 | 2.087 | 0.325 | B | |
0.394 | UX2100 | UX-d100-B-C16-H62-L115 | 0.630 | 0.740 | 1.693 | 2.441 | 4.528 | 2.087 | 0.325 | B | |
0.433 | UX3110 | UX-d110-C-C16-H80-L133 | 0.630 | 1.063 | 2.047 | 3.150 | 5.236 | 2.087 | 0.535 | UX0006/ M3x0.35x10C | C |
0.472 | UX3120 | UX-d120-C-C16-H80-L133 | 0.630 | 1.075 | 2.047 | 3.150 | 5.236 | 2.087 | 0.535 | C | |
0.512 | UX3130 | UX-d130-C-C16-H80-L133 | 0.630 | 1.102 | 2.047 | 3.150 | 5.236 | 2.087 | 0.535 | C | |
0.551 | UX4140 | UX-d140-D-C20-H105-L158 | 0.787 | 1.280 | 2.854 | 4.134 | 6.220 | 2.087 | 0.602 | UX0007/ M3x0.35x13D | D |
0.591 | UX4150 | UX-d150-D-C20-H105-L158 | 0.787 | 1.280 | 2.854 | 4.134 | 6.220 | 2.087 | 0.602 | D | |
0.630 | UX4160 | UX-d160-D-C20-H105-L158 | 0.787 | 1.280 | 2.854 | 4.134 | 6.220 | 2.087 | 0.602 | D | |
0.669 | UX5170 | UX-d170-E-C20-H115-L170 | 0.787 | 1.516 | 3.012 | 4.528 | 6.693 | 2.165 | 0.709 | UX0008/ M3x0.35x16E | E |
0.709 | UX5180 | UX-d180-E-C20-H115-L170 | 0.787 | 1.516 | 3.012 | 4.528 | 6.693 | 2.165 | 0.709 | E | |
0.748 | UX5190 | UX-d190-E-C20-H115-L170 | 0.787 | 1.516 | 3.012 | 4.528 | 6.693 | 2.165 | 0.709 | E | |
0.787 | UX6200 | UX-d200-F-C25-H120-L175 | 0.984 | 1.713 | 3.012 | 4.724 | 6.890 | 2.165 | 0.787 | UX0009/ M4x0.5x19F | F |
0.827 | UX6210 | UX-d210-F-C25-H120-L175 | 0.984 | 1.713 | 3.012 | 4.724 | 6.890 | 2.165 | 0.787 | F | |
0.866 | UX6220 | UX-d220-F-C25-H120-L175 | 0.984 | 1.713 | 3.012 | 4.724 | 6.890 | 2.165 | 0.787 | F | |
0.906 | UX7230 | UX-d230-G-C25-H120-L175 | 0.984 | 1.890 | 2.835 | 4.724 | 6.890 | 2.165 | 0.866 | UX0010/ M4x0.5x21G | G |
0.945 | UX7240 | UX-d240-G-C25-H120-L175 | 0.984 | 1.890 | 2.835 | 4.724 | 6.890 | 2.165 | 0.866 | G | |
0.984 | UX7250 | UX-d250-G-C25-H120-L175 | 0.984 | 1.890 | 2.835 | 4.724 | 6.890 | 2.165 | 0.866 | G |
(1) The LTB parameter varies between USPOT and UCHAMF inserts
(2) The insert series must match the series of the tool holder.
Note: Tool-holders and inserts are sold separately.
- UX Tool-holders spare parts:
- SP0105 Hex L-Key 0.050" 1+1/16/1+9/16
- UX0003 Pin for Insert Replacement
- Insert Clamping Screw – according to the table above
UBACK tool-holders coding system specifications and identification:
Ordering special UBack Tool-holders
We can also modify or produce tailor-made tool-holders.
If you need further assistance, please don’t hesitate to contact us.
Providing an application drawing or sketch, the raw material details, and any other relevant information will help us assist you more effectively.
How to Select the Correct Tool-Holder and UCHAMF Insert to Match Your Application:
For Standard Inserts:
- Refer to the “UCHAMF 82° and 90° Standard Inserts (mm/inch)” table below.
- Standard inserts are available for 82° and 90° countersink angles.
For Semi-Standard Solutions:
- Select the appropriate tool-holder based on the pilot hole diameter.
For example, if the pilot hole diameter is 8.5 mm, choose the UX2080, which supports a minimum diameter (Ødmin) of 8 mm. - Define the required parameters for the UCHAMF insert, including the countersink angle, chip-former, and coating.
- Complete the relevant details for the UCHAMF insert description according to the specifications provided below.
- Ensure compatibility between the UCHAMF insert series and the corresponding UX tool-holder. The series of the insert must align with the series of the tool-holder.
Notes:
- Coating-Our top recommendation is the NCT grade, featuring the versatile TiAlN PVD coating. It offers excellent thermal stability, oxidation resistance, and is compatible with a wide range of materials, including mild steels, stainless steel, and Inconel. For additional options, refer to the list of available coatings below.
- Tool-holders and inserts are sold separately.
UCHAMF inserts coding system specifications and identification:
UCHAMF 82° and 90° Standard Inserts (mm/inch):
|
Ødmin. Pilot Hole mm/inch |
Countersunk angle α=82° |
Countersunk angle α=90° |
Series |
||||
|
Insert SKU |
Insert Description |
ØDmax. |
Insert SKU |
Insert Description |
ØDmax. mm/inch |
||
|
8/0.315 |
UC2101 |
UC-82-d080-B-R04-PL-NCT |
17/0.669 |
UC2201 |
UC-90-d080-B-R04-PL-NCT |
18/0.709 |
B |
|
9/0.354 |
UC2102 |
UC-82-d090-B-R04-PL-NCT |
18/0.709 |
UC2202 |
UC-90-d090-B-R04-PL-NCT |
19/0.748 |
|
|
10/0.394 |
UC2103 |
UC-82-d100-B-R04-PL-NCT |
19/0.748 |
UC2203 |
UC-90-d100-B-R04-PL-NCT |
20/0.787 |
|
|
11/0.433 |
UC3101 |
UC-82-d110-C-R04-PL-NCT |
24/0.945 |
UC3201 |
UC-90-d110-C-R04-PL-NCT |
26/1.024 |
C |
|
12/0.472 |
UC3102 |
UC-82-d120-C-R04-PL-NCT |
25/0.948 |
UC3202 |
UC-90-d120-C-R04-PL-NCT |
27/1.063 |
|
|
13/0.512 |
UC3103 |
UC-82-d130-C-R04-PL-NCT |
26/1.024 |
UC3203 |
UC-90-d130-C-R04-PL-NCT |
28/1.102 |
|
|
14/0.551 |
UC4101 |
UC-82-d140-D-R04-PL-NCT |
28/1.102 |
UC4201 |
UC-90-d140-D-R04-PL-NCT |
31/1.220 |
D |
|
15/0.591 |
UC4102 |
UC-82-d150-D-R04-PL-NCT |
29/1.142 |
UC4202 |
UC-90-d150-D-R04-PL-NCT |
32/1.260 |
|
|
16/0.630 |
UC4103 |
UC-82-d160-D-R04-PL-NCT |
31/1.220 |
UC4203 |
UC-90-d160-D-R04-PL-NCT |
34/1.339 |
|
|
17/0.669 |
UC5101 |
UC-82-d170-E-R04-PL-NCT |
34/1.339 |
UC5201 |
UC-90-d170-E-R04-PL-NCT |
37/1.457 |
E |
|
18/0.709 |
UC5102 |
UC-82-d180-E-R04-PL-NCT |
35/1.378 |
UC5202 |
UC-90-d180-E-R04-PL-NCT |
38/1.496 |
|
|
19/0.748 |
UC5103 |
UC-82-d190-E-R04-PL-NCT |
37/1.457 |
UC5203 |
UC-90-d190-E-R04-PL-NCT |
40/1.575 |
|
|
20/0.787 |
UC6101 |
UC-82-d200-F-R04-PL-NCT |
38/1.496 |
UC6201 |
UC-90-d200-F-R04-PL-NCT |
41/1.614 |
F |
|
21/0.827 |
UC6102 |
UC-82-d210-F-R04-PL-NCT |
39/1.535 |
UC6202 |
UC-90-d210-F-R04-PL-NCT |
42/1.654 |
|
|
22/0.866 |
UC6103 |
UC-82-d220-F-R04-PL-NCT |
40/1.575 |
UC6203 |
UC-90-d220-F-R04-PL-NCT |
43/1.693 |
|
|
23/0.906 |
UC7101 |
UC-82-d230-G-R04-PL-NCT |
41/1.614 |
UC7201 |
UC-90-d230-G-R04-PL-NCT |
44/1.732 |
G |
|
24/0.945 |
UC7102 |
UC-82-d240-G-R04-PL-NCT |
42/1.654 |
UC7202 |
UC-90-d240-G-R04-PL-NCT |
45/1.772 |
|
|
25/0.984 |
UC7103 |
UC-82-d250-G-R04-PL-NCT |
43/1.693 |
UC7203 |
UC-90-d250-G-R04-PL-NCT |
46/1.811 |
|
UCHAMF - Ordering Special Inserts:
Here is an example of coding a special UCHAMF insert for the application shown on the right:
Ød= 8.7mm (0.343″)
Countersink angle= 110°
Material: Aluminim AISI / EN AW / JIS – 7075
The recommended tool-holder is: UX2080 / UX-d080-B-C16-H50-L110 with Ødmin=8mm (0.315″)
The corresponding insert is: UC-110-d080-B-PL-NCT
Important Notes:
Ensure that the pilot-hole length (L) is less than or equal to the RFC (Relief For Cutting): L ⩽ RFC, as specified in the UBACK tool-holders table below.
Ensure that the countersink diameter ØD is less than or equal to the maximum allowable diameter: ØD ⩽ ØDmax, as specified in the UBACK tool-holders table below.
If you need further assistance, please don’t hesitate to contact us.
Providing an application drawing or sketch, the raw material specifications, and any other relevant information will help us assist you more effectively.
Available Coatings Types:
|
Coating |
Key Features |
Applications |
Industries |
Material
Examples |
ISO GROUP |
|||||
|
P |
M |
K |
N |
S |
H |
|||||
|
TiAlN |
Suitable for mid steels, cast iron, stainless steel,
titanium alloys, Inconel, tool steel, and hardened steels. Offers excellent
thermal stability, oxidation resistance, and wear resistance. |
Ideal for high-speed cutting and general-purpose
machining. Performs well in both wet and dry conditions. |
Aerospace, Automotive, General Engineering |
AISI 304, 42CrMo4, GG (Grey Cast Iron),
Ti6Al4V |
✓ |
✓ |
✓ |
X |
✓ |
✓ |
|
TiAlSiN |
Provides exceptional hardness and oxidation resistance,
withstanding temperatures above 1,200°C. Suitable for high-strength steels,
superalloys, hardened steels (over 45 Rc), and titanium alloys. |
Best for high-performance machining in demanding
environments. Excels in dry machining at high speeds. |
Aerospace, Automotive, Die and Mold |
Inconel 718, AISI 4140, Ti6Al4V |
✓ |
✓ |
X |
X |
✓ |
X |
|
AlTiSiN |
Offers high hardness, thermal stability, and resistance
to wear and oxidation. Suitable for stainless steel, hardened cast,
superalloys, and steels over 45 Rc. |
Designed for high-speed machining in extreme
conditions. Performs exceptionally in dry machining. |
Aerospace, Automotive, Precision Engineering |
AISI 316, AISI H13, Hastelloy |
X |
✓ |
X |
X |
✓ |
✓ |
|
AlCrN |
Provides excellent oxidation resistance (up to
1,100°C), toughness, and abrasion resistance. Suitable for carbon steels,
cast iron, stainless steel, and aluminum. |
Suitable for general machining in wet and dry
environments. Excels in abrasive and high-wear applications. |
Automotive, Aerospace, Die and Mold |
AISI 304, AISI 1045, GG, AL6061 |
✓ |
X |
✓ |
✓ |
X |
X |
|
AlTiN |
High hardness, wear resistance, and thermal stability
up to 1,100°C. Designed for mid steels, cast iron, high-speed steels, tool
steel, and hardened materials. |
Ideal for heavy-duty machining and high-speed cutting.
Performs well in dry and abrasive conditions. |
Aerospace, Automotive, Heavy Engineering |
AISI 4340, M2 HSS, GG (Grey Cast Iron) |
✓ |
✓ |
✓ |
X |
X |
X |
|
TiB2 |
Known for
exceptional chemical stability, low friction, and high thermal conductivity.
Best for machining non-ferrous materials such as aluminum, copper, brass, and
magnesium alloys. |
Optimized for high-speed machining of non-ferrous
metals. Prevents material adhesion and improves efficiency. |
Aerospace, Automotive, Electronics |
AL7075, 6061-T6, Copper, Magnesium Alloys (AZ31) |
X |
X |
X |
✓ |
✓ |
X |
Chip-formers:
PL
Positive cutting land
Suitable for all around purpose
and ISO P,M,K,N,S
as well as composite materials
ML
Moderate cutting land
Suitable for and ISO P,M,K,S,H
Materials
HL
Negative cutting land
Suitable for and ISO P,M,K,S,H
Materials
