UBURR · CNC Application Case Study

Transmission Shaft Deburring in the Automotive Industry.

Automate front and rear burr removal on transmission shaft pilot holes with UBURR™ internal deburring tools. In a head-to-head trial in AISI 4340 steel, UBURR HSS blades completed 210 holes at Ø2.5 mm and 1,300 holes at Ø3.0 mm, compared with 100 and 500 holes for a competitor's HSS blade. Tool life and surface finish were verified with an endoscope.

AutomotiveAISI 434045,000 bores/month

See the comparison

UBURR transmission shaft deburring application in AISI 4340 steel — Application photo from the reported trial.

Pilot holes: Ø2.5 / 3.0 mm
Spindle speed: 2,000 RPM
Table feed: 500 mm/min
Tool life vs. competitor: 2.6× max

01 / The application

A head-to-head tool-life test.

The task

Run comparison tests against a competitor for removing burrs from the front and rear of machined drill holes in an automotive transmission shaft.

Part: Transmission shaft
Material: AISI 4340 (W.Nr. 1.6928)
Pilot holes: Ø2.5 & Ø3.0 mm (0.098" & 0.118")
Pilot hole length: H1 = 35 mm (1.38")
Production volume: 45,000 bores/month

The trial

Two UBURR tool-holder sets, each matched to one pilot-hole diameter, ran at 2,000 RPM and 500 mm/min with external emulsion. Blade life was compared with a competitor's HSS blade on the same holes. Tool life and surface finish were checked with an endoscope.

UBURR deburring of transmission shaft pilot holes — Supplied photo from the application.

02 / Tools & parameters

The tools behind
the result.

UBURR tool-holder set · Ø2.5 mm

UB2500

UBS-d025-C08-H29-L65

Blade: UB2022
Blade code: UB-TSB-2.5-PL-NCT

UBURR tool-holder set · Ø3.0 mm

UB3000

UBS-d030-C08-H29-L85

Blade: UB2032
Blade code: UBS-TSB-3.0-PL-NCT

Explore UBURR deburring tools

Recorded machining parameters
Parameter	Ø2.5 mm	Ø3.0 mm
Workpiece material	AISI 4340	AISI 4340
Pilot hole diameter	Ø2.5 mm (0.098")	Ø3.0 mm (0.118")
Pilot hole length	35 mm (1.38")	35 mm (1.38")
Spindle speed	2,000 RPM	2,000 RPM
Table feed	500 mm/min (20 in/min)	500 mm/min (20 in/min)
Cutting speed	16 m/min (52 sfm)	19 m/min (62 sfm)
Feed per tooth	0.25 mm (0.01")	0.25 mm (0.01")
Coolant	External emulsion	External emulsion

These values describe this trial. Confirm the setup for your own application with NOGA MT.

03 / Comparison results

Up to 2.6× the tool life.

Verified with an endoscope

NOGA UBURR (HSS blade)Competitor (HSS blade)

Ø2.5 mm0.098"

210 holes

100 holes

Ø3.0 mm0.118"

1,300 holes

500 holes

Holes completed per HSS blade
Parameter	NOGA UBURR	Competitor	Difference
Ø2.5 mm / 0.098"	210 holes	100 holes	2.1×
Ø3.0 mm / 0.118"	1,300 holes	500 holes	2.6×

The customer was highly satisfied with the results, especially the longer tool life and the surface finish, both verified with an endoscope.

Result of UBURR deburring on a transmission shaft pilot hole — Result photo supplied from the trial.

Second result view of a UBURR-deburred transmission shaft bore — Result photo supplied from the trial.