USPOT - Noga MT

UBACK AND USPOT 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.
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 USPOT Inserts for Back Counterbore or Spotface 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. Counterbore Range mm /inch
B	8.0–10.0 /0.315–0.394″	8.5–23.0 /0.335–0.906″
C	11.0–13.0 /0.433–0.512″	11.5–30.0 /0.453–1.181″
D	14.0–16.0 /0.551–0.630″	14.5–37.0 /0.571–1.457″
E	17.0–19.0 /0.669–0.748″	17.5–44.0 /0.689–1.732″
F	20.0–22.0 /0.787–0.866″	20.5–50.5 /0.807–1.988″
G	23.0–25.0 /0.906–0.984″	23.5–57.5 /0.925–2.264″

Series

Ød Pilot-Hole Range

/inch

ØDmax. Counterbore Range

/inch

8.0–10.0

/0.315–0.394″

8.5–23.0

/0.335–0.906″

11.0–13.0

/0.433–0.512″

11.5–30.0

/0.453–1.181″

14.0–16.0

/0.551–0.630″

14.5–37.0

/0.571–1.457″

17.0–19.0

/0.669–0.748″

17.5–44.0

/0.689–1.732″

20.0–22.0

/0.787–0.866″

20.5–50.5

/0.807–1.988″

23.0–25.0

/0.906–0.984″

23.5–57.5

/0.925–2.264″

The USPOT inserts are offered as semi-standard solutions tailored to meet customer-specific applications.

UBACK Standard Tool-Holders with USPOT Inserts (mm)

LTB1 – 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	LTB1⁽¹⁾ USPOT	ØDmax⁽²⁾	Weight (gram)	Piston Plug⁽³⁾	*Insert Clamping Screw MPL (mm)*	Series ⁽⁴⁾
8	UX2080	UX-d080-B-C16-H62-L115	16	17	43	62	115	53	6.8	18.5	69	UX0011/ M5x6	UX0005/ M2.5×0.35x7B	B
9	UX2090	UX-d090-B-C16-H62-L115	16	17.8	43	62	115	53	6.8	21	76			B
10	UX2100	UX-d100-B-C16-H62-L115	16	18.8	43	62	115	53	6.8	23	82			B
11	UX3110	UX-d110-C-C16-H80-L133	16	27	52	80	133	53	11.4	26	93	UX0011/ M5x6	UX0006/ M3x0.35x10C	C
12	UX3120	UX-d120-C-C16-H80-L133	16	27.3	52	80	133	53	11.4	28	103			C
13	UX3130	UX-d130-C-C16-H80-L133	16	28	52	80	133	53	11.4	30	115			C
14	UX4140	UX-d140-D-C20-H105-L158	20	32.5	72.5	105	158	53	13.5	32.5	160	UX0012/ M6x6	UX0007/ M3x0.35x13D	D
15	UX4150	UX-d150-D-C20-H105-L158	20	32.5	72.5	105	158	53	13.5	34.5	178			D
16	UX4160	UX-d160-D-C20-H105-L158	20	32.5	72.5	105	158	53	13.5	37	196			D
17	UX5170	UX-d170-E-C20-H115-L170	20	38.5	76.5	115	170	55	16	39.5	231	UX0012/ M6x6	UX0008/ M3x0.35x16E	E
18	UX5180	UX-d180-E-C20-H115-L170	20	38.5	76.5	115	170	55	16	41.5	254			E
19	UX5190	UX-d190-E-C20-H115-L170	20	38.5	76.5	115	170	55	16	44	278			E
20	UX6200	UX-d200-F-C25-H120-L175	25	43.5	76.5	120	175	55	17.8	46	344	UX0013/ M8x6	UX0009/ M4x0.5x19F	F
21	UX6210	UX-d210-F-C25-H120-L175	25	43.5	76.5	120	175	55	17.8	48.5	373			F
22	UX6220	UX-d220-F-C25-H120-L175	25	43.5	76.5	120	175	55	17.8	50.5	403			F
23	UX7230	UX-d230-G-C25-H120-L175	25	48	72	120	175	55	20	53	427	UX0013/ M8x6	UX0010/ M4x0.5x21G	G
24	UX7240	UX-d240-G-C25-H120-L175	25	48	72	120	175	55	20	55.5	445			G
25	UX7250	UX-d250-G-C25-H120-L175	25	48	72	120	175	55	20	57.5	492			G

(1) The LTB parameter varies between USPOT and UCHAMF inserts.

(2) The achieved tolerance for the counterbore or spotface diameter (ØD) is ±0.1 mm (0.004″)

(3) Piston plug designed to adapt to different coolant systems. For more info, click here.

(4) The insert series must match the series of the tool holder.

Note: Tool-holders and inserts are sold separately.

UBACK Standard Tool-Holders with USPOT Inserts (inch)

LTB1 – 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	LTB1⁽¹⁾ USPOT	ØDmax⁽²⁾	Weight (lbs)	Piston Plug⁽³⁾	*Insert Clamping Screw MPL (mm)*	Series ⁽⁴⁾
0.315	UX2080	UX-d080-B-C16-H62-L115	0.630	0.669	1.693	2.441	4.528	2.087	0.268	0.728	0.1521	UX0011/ M5x6	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	0.268	0.827	0.1676			B
0.394	UX2100	UX-d100-B-C16-H62-L115	0.630	0.740	1.693	2.441	4.528	2.087	0.268	0.906	0.1808			B
0.433	UX3110	UX-d110-C-C16-H80-L133	0.630	1.063	2.047	3.150	5.236	2.087	0.449	1.024	0.205	UX0011/ M5x6	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	0.449	1.102	0.2271			C
0.512	UX3130	UX-d130-C-C16-H80-L133	0.630	1.102	2.047	3.150	5.236	2.087	0.449	1.181	0.2535			C
0.551	UX4140	UX-d140-D-C20-H105-L158	0.787	1.280	2.854	4.134	6.220	2.087	0.531	1.280	0.3527	UX0012/ M6x6	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	0.531	1.358	0.3924			D
0.630	UX4160	UX-d160-D-C20-H105-L158	0.787	1.280	2.854	4.134	6.220	2.087	0.531	1.457	0.4321			D
0.669	UX5170	UX-d170-E-C20-H115-L170	0.787	1.516	3.012	4.528	6.693	2.165	0.630	1.555	0.5093	UX0012/ M6x6	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	0.630	1.634	0.56			E
0.748	UX5190	UX-d190-E-C20-H115-L170	0.787	1.516	3.012	4.528	6.693	2.165	0.630	1.732	0.6129			E
0.787	UX6200	UX-d200-F-C25-H120-L175	0.984	1.713	3.012	4.724	6.890	2.165	0.701	1.811	0.7584	UX0013/ M8x6	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	0.701	1.909	0.8223			F
0.866	UX6220	UX-d220-F-C25-H120-L175	0.984	1.713	3.012	4.724	6.890	2.165	0.701	1.988	0.8885			F
0.906	UX7230	UX-d230-G-C25-H120-L175	0.984	1.890	2.835	4.724	6.890	2.165	0.787	2.087	0.9414	UX0013/ M8x6	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	0.787	2.185	0.9811			G
0.984	UX7250	UX-d250-G-C25-H120-L175	0.984	1.890	2.835	4.724	6.890	2.165	0.787	2.264	1.0847			G

(1) The LTB parameter varies between USPOT and UCHAMF inserts.

(2) The achieved tolerance for the counterbore or spotface diameter (ØD) is ±0.1 mm (0.004″)

(3) Piston plug designed to adapt to different coolant systems. For more info, click here.

(4) The insert series must match the series of the tool holder.

Note: Tool-holders and inserts are sold separately.

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 USPOT Insert to Match Your Application:

The USPOT inserts are available as semi-standard solutions tailored to customer applications.

Choose the appropriate tool-holder based on the pilot hole diameter. For instance, if the pilot hole diameter is 8.5 mm, select the UX2080, which supports a minimum diameter (Ødmin) of 8 mm.

Specify the required parameters for the USPOT insert, including the counter-bore or spotface diameter, corner radius, chip-former, and coating.

Fill in the relevant details for the USPOT insert description as outlined in the specifications below.

Ensure compatibility between the USPOT insert series and the corresponding UX tool-holder. The series of the insert must match 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.

USPOT inserts coding system specifications and identification:

USPOT- Ordering Special Inserts:

Here is an example of coding a special USPOT insert for the application shown on the right:
Ød = 8.7mm (0.343″)
ØD = 17.6mm (0.693″)
R = 0.2mm (0.032″)
Material: AISI 4340 / 34CrNiMo6 (1.6582) / SNCM439, tempered to 42 HRC
The recommended tool-holder is UX2080 / UX-d080-B-C16-H62-L115
The corresponding insert is US-d087-D176-B-R02-ML-NCT
Important Note:
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.
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.

Try Using Our USPOT Insert Code Generator

& Tool-Holder Configurator

USPOT Insert & Tool-Holder Generator
All fields are required except Material Hardness (HRC) and Coating

Default corner radius: 0.4

Unit System:

Pilot-hole Diameter Ød:

Counterbore Diameter ØD:

Pilot-hole Length L:

Corner Radius:

ISO Material Group:

Material Hardness (HRC):

Coating (optional – default is NCT):

Available Coating types and surface treatments:

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 resis9tance, 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

Kknown for exceptional chemical stability, low friction, and high thermal conductivity. Best for machining non-ferrous materials such as aluminium, copper, brass, and magnesium alloys.

Reduces friction and Built-Up Edge. (BUE)

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

Polishing

Provides a smooth, refined surface finish by removing micro-defects, scratches, or burrs. Enhances aesthetics and surface quality. Reduces friction and BUE.

Suitable for machining aluminium with high speeds and high MRR (Metal Removal Rates)

Aerospace, Automotive

AL7075,

6061-T6, Copper, Magnesium Alloys (AZ31)

X

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