UFIBER® TECHNICAL INFORMATION

End Brush – UFIBER® Technical Specifications & Application Guide

UFIBER® End Brushes are precision ceramic-fiber tools designed for controlled deburring, edge finishing and polishing of localized surfaces, edges, chamfers, corners and recessed features.

Available in Flat End and 45° End configurations for CNC machines, machining centers, robotic systems and controlled hand-held rotary operation.

Compatible models

It can be used in the following environments.

CONFIGURATOR MODE

Selected environments:

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Features

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Controlled Cutting Action

Ceramic fibers continuously expose cutting edges, providing controlled deburring and finishing with consistent contact.

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CNC & Robotic Ready

Suitable for automated deburring and polishing on CNC machines, machining centers and robotic systems.

45°

Flat & 45° Configurations

Choose a Flat End Brush for axial contact or a 45° End Brush for chamfers, corners, recesses and difficult-to-access geometries.

Ø5

Ø5 mm Compact Brush

The compact Ø5 mm brush provides controlled access to localized surfaces and features where larger Surface Brushes may not be suitable.

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Up to 12,000 RPM

Designed for operation at spindle speeds up to 12,000 RPM when correctly mounted and operated within the recommended machining conditions.

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Adjustable Brush Tip

The ceramic-fiber tip can be shaped when required using a suitable diamond dressing tool to adapt the contact geometry to the application.

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End Brush Product Range

UF6...50

UF4...50

Series	Brush Type	Description	Brush Diameter	Available Grits	Maximum Speed
UF4...50	Flat End	UF-EB-...-D5-L20	Ø5 mm 0.197"	#150 – #6000	12,000 RPM
UF6...50	45° End	UF-EB45-...-D5-L20	Ø5 mm 0.197"	#150 – #6000	12,000 RPM

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Flat End vs. 45° End Brush

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UF4...50

Flat End Type

Designed for controlled axial contact on localized flat surfaces, edges and small planar areas.

Best for: Flat-surface deburring • Outer-edge finishing • Spot polishing • Localized planar surfaces • Axial contact

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UF6...50

45° End Type

Designed for selective contact with chamfers, angled surfaces, corners and recessed geometries.

Best for: Chamfer deburring • Angled surfaces • Corners and recesses • Selective edge finishing • Difficult-to-access locations

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Grit Selection by Burr Condition & Material

Grit	Code	Relative Action	Typical Application
#150	G	Very aggressive	Heavy burrs and hardened materials
#200	P	Aggressive	Hardened steels and difficult burrs
#400	V	Medium-coarse	Steel, stainless steel and heat-resistant alloys
#600	O	General deburring	General-purpose metal deburring
#800	B	Fine deburring	Fine burr removal and pre-finishing
#1000	W	Fine finishing	Controlled surface finishing
#1200	R	Fine polishing	Final finishing and non-ferrous materials
#2000	M	Very fine	Aluminum, plastics and delicate surfaces
#3000	Z	Ultra-fine	Composites and high-finish applications
#6000	A	Micro-finish	Final polishing of composites and plastics

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How to Use the UFIBER® End Brush

①

1. Select the Contact Geometry

Use the Flat End Brush for axial surface contact and the 45° End Brush for chamfers, corners or recessed features.

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2. Start with Light Engagement

Begin with minimum brush engagement. Increase contact only when additional cutting action is required.

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3. Maintain Controlled Movement

Move continuously over the machining area and avoid holding the rotating brush at one point for an extended period.

Brush Engagement: The engagement value represents approximate axial or radial deflection of the ceramic fibers against the workpiece and not the amount of workpiece material removed.

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UFIBER® END BRUSH — MACHINING RECOMMENDATIONS

Search by material, condition, grade, DIN number, grit or recommended method, or filter directly by ISO material group.

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41 of 41 conditions

Starting parameters for CNC deburring and polishing • Metric and imperial units • Use the lower value first and optimize on the actual component
WORKPIECE MATERIAL					DEBURRING				POLISHING				COOLANT
ISO	Material Group	Material Details	Condition	Grade AISI / SAE / ASTM + DIN	RPM	Feed mm/min • in/min	Engagement mm • inch	UFIBER Deburring Grit	RPM	Feed mm/min • in/min	Engagement mm • inch	UFIBER Polishing Grit	Recommended Method
P	Non-alloy steel and cast steel, free cutting steel	<0.25% C	Annealed	10201.0044	10,800–12,000	1200–2000 47.2–78.7	0.3–0.5 0.012–0.020"	#400 (V) / #600 (O) #800 (B) for fine burrs	10,500–12,000	700–1400 27.6–55.1	0.1–0.2 0.004–0.008"	#800 (B) → #1200 (R)	Air / Wet
P	Non-alloy steel and cast steel, free cutting steel	≥0.25% C	Annealed	10351.0501	7,300–12,000	1200–2000 47.2–78.7	0.3–0.5 0.012–0.020"	#400 (V) / #600 (O)	10,500–12,000	700–1400 27.6–55.1	0.1–0.2 0.004–0.008"	#800 (B) → #1200 (R)	Air / Wet
P	Non-alloy steel and cast steel, free cutting steel	<0.55% C	Quenched and tempered	10451.1201	6,400–12,000	1000–1700 39.4–66.9	0.25–0.45 0.010–0.018"	#150 / #200 / #400	8,900–12,000	600–1100 23.6–43.3	0.08–0.18 0.003–0.007"	#400 → #800 #1000 / #1200 final	Air / Wet
P	Non-alloy steel and cast steel, free cutting steel	≥0.55% C	Annealed	10551.0535	6,000–12,000	1000–1700	0.25–0.45	#150 / #200 / #400	9,500–12,000	600–1100	0.08–0.18	#400 → #800 #1000 / #1200 final	Air / Wet
P	Non-alloy steel and cast steel, free cutting steel	≥0.55% C	Quenched and tempered	10601.1221	5,100–12,000	1000–1700	0.25–0.45	#150 / #200 / #400	7,600–12,000	600–1100	0.08–0.18	#400 → #800 #1000 / #1200 final	Air / Wet
P	Low alloy and cast steel (<5% alloying elements)	—	Annealed	G926001.5028	6,000–12,000	1000–1800	0.25–0.5	#400 / #600	10,500–12,000	600–1200	0.08–0.2	#800 → #1200	Air / Wet
P	Low alloy and cast steel (<5% alloying elements)	—	Quenched and tempered	41301.7218	5,100–12,000	1000–1800	0.25–0.5	#150 / #200 / #400	8,300–12,000	600–1200	0.08–0.2	#400 → #800 #1000 / #1200 final	Air / Wet
P	Low alloy and cast steel (<5% alloying elements)	—	Quenched and tempered	41421.2332	5,100–12,000	1000–1800	0.25–0.5	#150 / #200 / #400	8,300–12,000	600–1200	0.08–0.2	#400 → #800 #1000 / #1200 final	Air / Wet
P	Low alloy and cast steel (<5% alloying elements)	—	Quenched and tempered	50451.7006	5,100–12,000	1000–1800	0.25–0.5	#150 / #200 / #400	8,300–12,000	600–1200	0.08–0.2	#400 → #800 #1000 / #1200 final	Air / Wet
P	High alloyed steel, cast steel and tool steel	—	Annealed	H131.2344	3,800–9,500	700–1400	0.2–0.4	#150 / #200 / #400	12,000 max.	400–800	0.05–0.2	#400 → #800 #1000 / #1200 final	Wet preferred
P	High alloyed steel, cast steel and tool steel	—	Quenched and tempered	M331.3249	3,200–7,600	700–1400	0.2–0.4	#150 / #200 / #400	12,000 max.	400–800	0.05–0.2	#400 → #800 #1000 / #1200 final	Wet preferred
P	Stainless steel and cast steel	Ferritic / martensitic	—	4201.4021	3,800–8,900	800–1500	0.2–0.4	#150 / #200 / #400	9,500–12,000	600–1200	0.05–0.2	#400 → #800 #1000 / #1200 final	Wet preferred
P	Stainless steel and cast steel	Martensitic	—	——	3,200–7,600	800–1500	0.2–0.4	#150 / #200 / #400	7,600–12,000	600–1200	0.05–0.2	#400 → #800 #1000 / #1200 final	Wet preferred
M	Stainless steel	Austenitic, duplex	—	304L1.4306	3,200–7,600	800–1500	0.2–0.4	#400 / #600 #800 fine burrs	9,500–12,000	600–1200	0.05–0.2	#800 → #1200	Wet recommended
K	Gray cast iron (GG)	Ferritic / pearlitic	—	Class 250.6015	3,800–10,800	900–1600	0.25–0.45	#200 / #400 #600 fine burrs	7,600–12,000	600–1100	0.08–0.18	#600 → #1000	Air preferred
K	Gray cast iron (GG)	Pearlitic / martensitic	—	Grade H2036037	3,200–8,900	900–1600	0.25–0.45	#150 / #200 / #400	6,400–11,500	600–1100	0.08–0.18	#400 → #800 #1000 / #1200 final	Air preferred
K	Nodular cast iron (GGG)	Ferritic	—	60-40-180.7043	3,800–9,500	1100–1900	0.3–0.5	#400 / #600	7,000–12,000	700–1300	0.1–0.2	#800 → #1200	Air preferred
K	Nodular cast iron (GGG)	Pearlitic	—	F335000.705	3,200–8,300	900–1600	0.25–0.45	#150 / #200 / #400	5,700–10,800	600–1100	0.08–0.18	#400 → #800 #1000 / #1200 final	Air preferred
K	Malleable cast iron	Ferritic	—	A470.8135	3,800–9,500	1100–1900	0.3–0.5	#400 / #600	7,000–12,000	700–1300	0.1–0.2	#800 → #1200	Air preferred
K	Malleable cast iron	Pearlitic	—	A220 Class0.8155	3,200–8,300	900–1600	0.25–0.45	#150 / #200 / #400	5,700–10,800	600–1100	0.08–0.18	#400 → #800 #1000 / #1200 final	Air preferred
N	Aluminum-wrought alloys	—	Not hardenable	50053.3315	11,500–12,000	1200–2000	0.2–0.5	#800 / #1200	10,500–12,000	1000–1800	0.05–0.2	#1200 → #2000	Wet / MQL
N	Aluminum-wrought alloys	—	Hardenable	70753.4365	10,200–12,000	1200–2000	0.2–0.5	#800 / #1200	9,500–12,000	1000–1800	0.05–0.2	#1200 → #2000	Wet / MQL
N	Aluminum-cast alloys	≤12% Si	Not hardenable	5183.3292	9,900–12,000	1200–2000	0.2–0.5	#800 / #1200	8,900–12,000	1000–1800	0.05–0.2	#1200 → #2000	Wet / MQL
N	Aluminum-cast alloys	≤12% Si	Hardenable	5153.3241	9,200–12,000	1200–2000	0.2–0.5	#800 / #1200	8,300–12,000	1000–1800	0.05–0.2	#1200 → #2000	Wet / MQL
N	Aluminum-cast alloys	>12% Si	High temperature	390—	8,300–12,000	800–1600	0.2–0.4	#600 / #800	6,400–12,000	700–1400	0.05–0.15	#1000 → #1200	Wet / MQL
N	Copper alloys	>1% Pb	Free cutting	C360002.0375	8,300–12,000	1000–1800	0.2–0.4	#800 / #1200	7,600–12,000	800–1600	0.05–0.2	#1200 → #2000	Air / Wet
N	Copper alloys	—	Brass	C220002.023	8,900–12,000	1000–1800	0.2–0.4	#800 / #1200	8,900–12,000	800–1600	0.05–0.2	#1200 → #2000	Air / Wet
N	Copper alloys	—	Electrolytic copper	C630002.0966	7,000–12,000	1000–1800	0.2–0.4	#800 / #1200	6,400–12,000	800–1600	0.05–0.2	#1200 → #2000	Air / Wet
N	Non metallic	Duroplastics, fiber plastics	—	Bakelite—	5,100–12,000	800–1600	0.1–0.3	#2000 / #3000	5,100–10,200	600–1400	0.05–0.15	#3000 → #6000	Dry air + extraction
N	Non metallic	Hard rubber	—	Ebonite—	3,800–11,500	800–1600	0.1–0.3	#2000 / #3000	3,800–7,600	600–1400	0.05–0.15	#3000 → #6000	Dry air + extraction
S	High temperature alloys	Fe based	Annealed	3301.4864	2,500–6,000	600–1200	0.1–0.3	#150 / #200 / #400	5,100–10,200	500–1000	0.05–0.15	#400 → #800 #1000 / #1200 final	Wet recommended
S	High temperature alloys	Fe based	Hardened	S5901.4977	2,200–5,100	600–1200	0.1–0.3	#150 / #200 / #400	3,800–7,600	500–1000	0.05–0.15	#400 → #800 #1000 / #1200 final	Wet recommended
S	High temperature alloys	Ni or Co based	Annealed	Incoloy 8252.4858	1,900–4,500	400–900	0.1–0.3	#150 / #200 / #400	2,200–4,100	350–800	0.05–0.15	#400 → #800 #1000 / #1200 final	Wet recommended
S	High temperature alloys	Ni or Co based	Hardened	Inconel 7182.4668	1,600–3,500	400–900	0.1–0.3	#150 / #200 / #400	1,900–3,500	350–800	0.05–0.15	#400 → #800 #1000 / #1200 final	Wet recommended
S	High temperature alloys	Ni or Co based	Cast	Nimocast K242.4674	1,600–3,800	400–900	0.1–0.3	#150 / #200 / #400	1,900–3,800	350–800	0.05–0.15	#400 → #800 #1000 / #1200 final	Wet recommended
S	Titanium alloys	—	Pure	Titanium G.13.7024	2,200–5,100	500–1000	0.1–0.3	#150 / #200 / #400	2,200–4,500	400–800	0.05–0.15	#400 → #800 #1000 / #1200 final	Wet recommended
S	Titanium alloys	—	Alpha+beta alloys, hardened	Titanium G.53.7165	1,900–4,100	500–1000	0.1–0.3	#150 / #200 / #400	1,900–3,800	400–800	0.05–0.15	#400 → #800 #1000 / #1200 final	Wet recommended
H	Hardened steel	—	Hardened	HARDOX 500—	2,200–5,100	400–900	0.1–0.3	#150 / #200 / #400	12,000 max.	300–700	0.05–0.15	#400 → #800 #1000 / #1200 final	Wet preferred
H	Hardened steel	—	Hardened	HARDOX Extreme—	1,900–3,800	400–900	0.1–0.3	#150 / #200 / #400	9,500–12,000	300–700	0.05–0.15	#400 → #800 #1000 / #1200 final	Wet preferred
H	Chilled cast iron	—	Cast	A532 IIIA 25% Cr0.965	2,500–5,100	500–1000	0.15–0.3	#150 / #200 / #400	6,400–11,500	400–800	0.05–0.15	#400 → #800 #1000 / #1200 final	Wet preferred
H	Hardened cast iron	—	Hardened	A532 IID 20% CrMo0.9645	2,200–4,500	500–1000	0.15–0.3	#150 / #200 / #400	5,100–9,500	400–800	0.05–0.15	#400 → #800 #1000 / #1200 final	Wet preferred

No matching material found Try another material, grade, DIN number, grit or ISO group.

Maximum spindle speed: 12,000 RPM. The values above are recommended starting parameters and should be optimized on the actual component.

Coolant Selection: Use the coolant method shown in the machining table as the starting recommendation. Coolant can assist with heat control, chip evacuation and surface-finish consistency. Always confirm compatibility with the workpiece material and production process.

Recommended RPM vs. Maximum RPM: The machining table provides recommended starting RPM ranges by material. 12,000 RPM is the absolute maximum spindle speed and should not be interpreted as the recommended speed for every application.

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Controlling Deburring & Polishing Performance

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Increase Deburring Action

Coarser grit → More engagement → Lower feed → Additional controlled pass

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Reduce Aggressiveness

Finer grit → Lighter engagement → Higher feed → Fewer passes

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Improve Surface Finish

Finer grit sequence → Light contact → Stable feed → Finishing passes

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Improve Brush Life

Reduce pressure → Correct alignment → Avoid side load → Minimum required engagement

Important: Do not compensate for insufficient cutting action only by increasing brush pressure. Excessive fiber deflection can reduce process stability and brush life.

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End Brush Installation & Usage

①

01. Shank Grip

Grip the brush shank by at least 20 mm to ensure secure clamping.

②

02. Chuck Matching

Use a chuck or collet that correctly matches the brush shank diameter.

③

03. Minimize Runout

Keep spindle and tool runout as low as practical for stable brush contact.

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04. Initial Engagement

Start with minimum contact and increase engagement gradually only when required.

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05. Secure Workholding

Ensure the brush and workpiece are securely clamped before CNC operation.

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06. Validate the Process

Confirm the parameters on the actual component before production use.

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Manual & CNC Operating Speed Guidelines

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HAND-HELD

Manual Operation

1,000 → 3,000 RPM

Start at approximately 1,000 RPM. Once stable control is established, increase gradually up to 3,000 RPM.

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CNC / ROBOTIC

Automated Operation

Up to 12,000 RPM

Follow the RPM values specified in the machining recommendation table. Never exceed 12,000 RPM.

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Correct Brush Contact

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Correct – Light Tip Contact

Use light axial contact for localized deburring, edge finishing and polishing.

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Correct – Controlled Angled Contact

For the 45° End Type, keep engagement light and use the formed tip to reach chamfers, corners and recesses.

Avoid – Excessive Side Loading

Do not force the ceramic fibers strongly sideways against an edge. Excessive bending can reduce stability and accelerate wear.

Recommended application: Fine machining burrs, localized edge finishing, cutter-mark reduction and polishing. Large or heavy burrs may require pre-machining before UFIBER finishing.

End Brush Troubleshooting

Problem	Recommended Adjustment
Burr remains	Use a coarser grit → slightly increase engagement → reduce feed → add another controlled pass.
Excessive edge rounding	Increase feed → reduce brush engagement → select a finer grit → reduce RPM if necessary.
Brush marks	Use a finer grit → reduce engagement → maintain stable movement → add a light finishing pass.
Excessive brush wear	Reduce engagement → check alignment → minimize side loading → verify runout and clamping.
Poor surface finish	Use a progressive grit sequence → reduce final engagement → maintain stable feed → check brush cleanliness.
Vibration / unstable contact	Stop operation → check chuck, runout, brush condition and workholding before restarting.

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Brush Wear & Maintenance

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WEAR

Brush Wear Changes Cutting Behavior

As the ceramic fibers wear and become shorter, stiffness and contact behavior may change. Re-check the process when the brush has visibly shortened.

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PROCESS CONTROL

Compensate Gradually

If the process becomes too aggressive, reduce engagement, increase feed, reduce RPM if required, or select a finer grit.

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CLEANING

Keep the Brush Clean

Remove accumulated machining debris, dust and coolant residue. Contamination can reduce cutting consistency and surface-finish quality.

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INSPECTION

Inspect Before Production

Check the brush tip, shank, clamping condition and runout before use. Replace a damaged or unstable brush before production machining.

Process stability: Do not maintain performance by increasing pressure alone as the brush wears. Optimize engagement, feed, RPM and grit together.

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End Brush Safety Precautions & Instructions

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Operation Safety

• Do not exceed the specified maximum spindle speed.
• Do not use pneumatic-powered hand tools.
• Stop immediately if abnormal vibration occurs.
• Avoid prolonged machining at one fixed point.
• Ensure secure tool and workpiece clamping.

✓

Operator & Work Area Safety

• Wear suitable eye protection.
• Use respiratory protection where required.
• Use suitable dust and particle extraction.
• Keep flammable materials away from the machining area.
• Do not touch hot surfaces immediately after machining.

Process validation required: Machining performance depends on workpiece material, hardness, burr geometry, brush configuration, grit, machine rigidity, workholding and operating conditions.

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