R&D LNNOVATION

Cutting tools for the rail transit industry

Straight-mounted rail blade

Kingtal has been focusing on rail machining for many years and has established deep collaborations with numerous rail transit companies in the industry, developing a series of specialized cutting tools and blades. With extensive application and development experience, Kingtal offers a complete range of forming milling blades for machining rails, turnouts, and crossings.

The KP251G and KP402U grades, among others, are widely used in the rail transit sector and are carefully selected to match various factors such as the workpiece material, blank condition, machine tool condition, and machining parameters.

Blade shape Model Dimension (mm) Grade
L C S d R KP251G KM453S KD201U KP402U
KLNE151207 15.875 12.7 7.94 5.4 ~ Zero     ●
KLNE191406 19.05 14.3 6.35 5.4 ~ Zero     ●
KLNE191406-4R200 19.05 14.3 6.35 5.4 2 Zero     ●
                   
KLNE151207-NR1000 15.875 12.7 7.94 5.4 10 Zero     ●
KLNE151207-NR8000 15.875 12.7 7.94 5.4 80 Zero     ●
KLNE151207-R1200 15.875 12.7 7.94 5.4 12 Zero     ●
                   

We offer a full range of blanks, enabling us to quickly customize precision-ground blades in various sizes according to your needs.

 

Hub machining

Train wheels operate continuously under high-speed and high-pressure conditions, placing stringent demands on the precision of their profiles. Kingtal specializes in train wheel machining and has long-term partnerships with leading domestic wheel manufacturers, providing comprehensive material and structural solutions for rough machining, semi-finishing, and finishing of train wheels.

Specialized grade

KP155U: High-strength matrix + thick-columnar-crystal Al2O3 coating, offering superior wear resistance and abrasion resistance, suitable for rough machining.

RW104U features a matrix with exceptionally high hot hardness and superior thermal shock resistance, making it suitable for wet semi-finishing applications.

RW054U: High-hardness substrate with a thickened columnar-grain Al2O3 coating—high wear-resistant grade, suitable for precision finishing.

China

Blade shape Model Dimension (mm) Grade Cutting parameters
L 
Side length		 IC 
Incircle		 S 
Thickness		 D 
Aperture		 R 
Knife tip		 KP 154U KP 254U KP 354U KM 152U KM 252U KM 352U KM 402U Cutting depth 
(mm)		 Feed 
(mm/r)
CNMM190616-HGR 19.3 19.05 6.35 7.94 1.6   ★         ● 2.0~5.0~8.0 0.3~0.5~0.8
NMM190624-HGR 19.3 19.05 6.35 7.94  2.4   ★         ● 2.0~5.0~8.0 0.4~0.6~1.0
CNMM250924-HGR 25.8 25.4 9.525 9.12 2.4   ★         ● 3.0~8.0~13.0 0.5~0.8~1.4
CNMM190616-HIR 19.3 19.05 6.35 7.94 1.6   ★         ● 2.0~5.0~10.0 0.3~0.5~0.8
CNMM190624-HIR 19.3 19.05 6.35 7.94 2.4   ★         ● 2.0~5.0~10.0 0.4~0.6~1.0
CNMM250924-HIR 25.8 25.4 9.525 9.12 2.4   ★         ● 3.0~10.0~15.0 0.5~0.8~1.4

SN

Blade shape Model Dimension (mm) Grade Cutting parameters
L 
Side length		 IC 
Incircle		 S 
Thickness		 D 
Aperture		 R 
Knife tip		 KP 154U KP 254U KP 354U KM 152U KM 252U KM 352U KM 402U Cutting depth 
(mm)		 Feed 
(mm/r)
SNMM190616-HGR 19.05 19.05 6.35 7.94 1.6   ★         ● 2.0~5.0~8.0 0.3~0.5~0.8
SNMM190624-HGR 19.05 19.05 6.35 7.94 2.4   ★         ● 2.0~5.0~8.0 0.4~0.6~1.0
SNMM250724-HGR 25.4 25.4 7.94 9.12 2.4   ★         ● 3.0~8.0~15.0 0.5~0.8~1.4
SNMM250924-HGR 25.4 25.4 9.525 9.12 2.4   ★         ● 3.0~8.0~17.0 0.5~0.8~1.4
SNMM190616-HIR 19.05 19.05 6.35 7.94 1.6   ★         ● 2.0~5.0~10.0 0.3~0.5~0.8
SNMM190624-HIR 19.05 19.05 6.35 7.94 2.4   ★         ● 2.0~5.0~10.0 0.4~0.6~1.0
SNMM250724-HIR 25.4 25.4 7.94 9.12 2.4   ★         ● 3.0~10.0~18.0 0.5~0.8~1.6
SNMM250924-HIR 25.4 25.4 9.525 9.12 2.4   ★         ● 3.0~10.0~20.0 0.5~0.8~1.6

Hub Knife RCMX

Blade shape Model       Grade Cutting parameters
IC S D RW 054U RW 104U KP 155U KP 254U KP 354U KM 352U KM 402U Cutting depth 
(mm)		 Feed 
(mm/r)
RCMX2006MO-RWF 20.0 6.35 6.5 ★     ●       2.0~5.0~8.0 0.20~0.45~1.20
RCMX2507MO-RWF 25.0 7.94 7.5 ★     ●       2.5~6.0~10.0 0.25~0.60~1.50
RCMX2006MO-RWM 20.0 6.35 6.5   ★   ●       2.0~5.0~8.0 0.20~0.45~1.70
RCMX2507MO-RWM 25.0 7.94 7.5   ★   ●       2.5~6.0~10.0 0.25~0.60~2.00
RCMX3209MO-RWM 32.0 9.525 9.6   ★   ●       3.0~8.0~12.0 0.30~0.90~2.50
RCMX2507MO-RWR 25.0 7.94 7.5     ★   ●     2.5~6.0~10.0 0.25~0.80~2.50
RCMX3209MO-RWR 32.0 9.525 9.6     ★   ●     3.0~8.0~12.0 0.30~1.00~3.00

 

Wheel dressing

Transitional wear on train wheels often leads to catastrophic accidents, such as derailments. Railway companies typically perform regular maintenance on worn wheels to preserve their original shape.

Kingtal has consistently provided tool solutions for wheel profile finishing, offering standard blades and solutions for roughing, semi-finishing, and finishing operations.

Blade shape Model Dimension (mm) Grade Cutting parameters
L 
long		 C 
Wide		 S 
Thick		 D 
Aperture		 R 
Rounded corners		 KP 154U KP 254U KP 354U KM 152U KM 252U KM 352U Cutting depth 
(mm)		 Feed 
(mm/r)
LNMX191940-RWF 19.05 19.05 10.0 6.35 4.0 ★       ●   0.3~2.0~5.0 0.3~0.5~1.0
                           
LNMX191940-RWM 19.05 19.05 10.0 6.35 4.0   ★     ●   1.5~4.5~9.0 0.45~0.8~1.3
LNMX301940-RWM 30.0 19.05 12.0 6.35 4.0   ★     ●   1.5~7.0~15.0 0.50~0.8~1.3
LNMX301940-RWR 30.0 19.05 12.0 6.35 4.0   ★     ●   2.0~7.0~15.0 0.70~1.0~1.5
                           

Axle rough machining SN25

Blade shape Model Dimension (mm) Grade Cutting parameters
L 
Side length		 IC 
Incircle		 S 
Thickness		 D 
Aperture		 R 
Knife tip		 KP 154U KP 254U KP 354U KM 152U KM 252U KM 352U KM 402U Cutting depth 
(mm)		 Feed 
(mm/r)
SNMM250924-HGR 25.4 25.4 9.525 9.12 2.4   ★         ● 3.0~8.0~17.0 0.5~0.8~1.4
                             
SNMM250924-HIR 25.4 25.4 9.525 9.12 2.4   ★         ● 3.0~10.0~20.0 0.5~0.8~1.6
                             

Axle peeling LNMX

Blade shape 
 		 Model Dimension (mm) Grade Cutting parameters
L 
Side length		 C 
Width		 S 
Thickness		 D 
Aperture		 KP 154U KP 254U KP 354U KM 152U KM 252U KM 352U KM 402U Cutting depth 
(mm)		 Feed 
(mm/r)
LNMX322212-RWR 32 22 12.7 6.6     ★         3.0~15.0~25.0 0.7~1.2~2.0
                           

 

Axle machining

A standardized blade series is available for rough turning of train axles.

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