Kingdon Tube Scraper Inserts: Precision Finishing for Bores, Intersections, and Tube Scarfing
Kingdon tube scraper inserts are engineered for high-precision internal machining, cross-hole deburring, and ERW tube scarfing operations . Covering a comprehensive range including HDMB, SDUB, SPUB, SNGN, and RNGX series, these carbide inserts deliver exceptional surface finishes and extended tool life in steel, stainless steel, and non-ferrous materials.
Geometry & Chip Control Logic
Unlike standard turning inserts, tube scrapers feature specialized geometries designed for the unique stresses of internal material removal and intersection deburring :
HDMB 20K-R Series (R12–R50): With a standard length of 20.70 mm and thickness of 4.76 mm, these inserts feature a wide range of corner radii (Re 12–50) and a 5.20 mm fixing hole, making them ideal for heavy-duty tube scarfing and deep internal grooving .
SDUB 20K-R & SPUB 1904K-R Series: The SDUB series (L 22.00 mm, T 6.00 mm, Φd 6.35 mm) offers larger radii (R50–R100) for aggressive material removal, while the SPUB series (L 19.05 mm, T 4.76 mm, Φd 5.20 mm) with R12–R30 radii excels in fine-tuning bore surfaces and removing internal burrs .
SNGN 12K-R Series (R10–R70): Compact 12.70 mm length with 8.00 mm thickness, providing versatile multi-edge options for precision deburring in smaller diameter holes and complex cross-sections.
RNGX Series (10.00–35.00 mm OD): Features specific A1/A2 angles (e.g., RNGX1004N06-AR6.5 with A2 24°/A1 48°) and varying thicknesses (4.50–12.00 mm), optimized for high-efficiency face scraping and chamfering within tubes.
|
Type |
Dimensions(mm) |
|||
|
L |
T |
Фd |
Re |
|
|
HDMB 20K-R12 |
20.70 |
4.76 |
5.20 |
12 |
|
HDMB 20K-R15 |
20.70 |
4.76 |
5.20 |
15 |
|
HDMB 20K-R20 |
20.70 |
4.76 |
5.20 |
20 |
|
HDMB 20K-R25 |
20.70 |
4.76 |
5.20 |
25 |
|
HDMB 20K-R40 |
20.70 |
4.76 |
5.20 |
40 |
|
HDMB 20K-R50 |
20.70 |
4.76 |
5.20 |
50 |
|
Type |
Dimensions(mm) |
|||
|
L |
T |
Фd |
Re |
|
|
SDUB 20K-R50 |
22.00 |
6.00 |
6.35 |
50 |
|
SDUB 20K-R75 |
22.00 |
6.00 |
6.35 |
75 |
|
SDUB 20K-R100 |
22.00 |
6.00 |
6.35 |
100 |
|
SPUB 1904K-R12 |
19.05 |
4.76 |
5.20 |
12 |
|
SPUB 1904K-R15 |
19.05 |
4.76 |
5.20 |
15 |
|
SPUB 1904K-R20 |
19.05 |
4.76 |
5.20 |
20 |
|
SPUB 1904K-R25 |
19.05 |
4.76 |
5.20 |
25 |
|
SPUB1904K-R30 |
19.05 |
4.76 |
5.20 |
30 |
|
Type |
Dimensions(mm) |
|||
|
L |
T |
Фd |
Re |
|
|
SDUB 20K-R50 |
22.00 |
6.00 |
6.35 |
50 |
|
SDUB 20K-R75 |
22.00 |
6.00 |
6.35 |
75 |
|
SDUB 20K-R100 |
22.00 |
6.00 |
6.35 |
100 |
|
SPUB 1904K-R12 |
19.05 |
4.76 |
5.20 |
12 |
|
SPUB 1904K-R15 |
19.05 |
4.76 |
5.20 |
15 |
|
SPUB 1904K-R20 |
19.05 |
4.76 |
5.20 |
20 |
|
SPUB 1904K-R25 |
19.05 |
4.76 |
5.20 |
25 |
|
SPUB1904K-R30 |
19.05 |
4.76 |
5.20 |
30 |
|
Type |
Dimensions(mm) |
||
|
L |
T |
Re |
|
|
SNGN 12K-R10 |
12.70 |
8.00 |
10.00 |
|
SNGN12K-R16 |
12.70 |
8.00 |
16.00 |
|
SNGN12K-R20 |
12.70 |
8.00 |
20.00 |
|
SNGN12K-R25 |
12.70 |
8.00 |
25.00 |
|
SNGN 12K-R30 |
12.70 |
8.00 |
30.00 |
|
SNGN 12K-R40 |
12.70 |
8.00 |
40.00 |
|
SNGN12K-R50 |
12.70 |
8.00 |
50.00 |
|
SNGN 12K-R60 |
12.70 |
8.00 |
60.00 |
|
SNGN 12K-R70 |
12.70 |
8.00 |
70.00 |
|
Type |
Dimensions(mm) |
||||
|
ФD |
S |
Фd |
α2 |
α1 |
|
|
RNGX1004N06-AR6.5 |
10.00 |
4.50 |
6.00 |
24 |
48 |
|
RNGX1910N09-AR10 |
19.00 |
10.00 |
9.00 |
17 |
42 |
|
RNGX2212N12-AR14 |
22.00 |
12.00 |
12.00 |
35 |
36 |
|
RNGX3512N20-AR23 |
35.00 |
12.00 |
20.00 |
50.6 |
36 |
Why Choose Kingdon Scrapers?
Superior Edge Integrity: Manufactured from fine-grain tungsten carbide with advanced PVD/CVD coatings to resist heat and abrasion during high-friction internal scraping .
Interruption Resistance: Specialized edge honing prevents micro-chipping when crossing drilled intersections or handling the fluctuating loads of weld seam removal .
Cost-Effective Indexability: Multi-edge designs (especially in SNGN and SPUB) maximize the cost per hole, reducing machine downtime for tool changes.
Coolant Compatibility: Precision-ground fixing holes (Φd 2.90–20.00 mm) ensure secure mounting on standard scraper holders, working seamlessly with through-coolant systems to flush chips from deep bores .
Typical Applications
Tube & Pipe Mills: External and internal weld seam scarfing on ERW and API tubes .
Hydraulic & Pneumatic Systems: Deep-hole finishing, cross-hole deburring, and chamfering in valve bodies and manifold blocks .
Automotive & Aerospace: Precision deburring of high-strength alloy components, cylinder bores, and landing gear struts .
ZZKD B2B Supply Terms
Full In-House Production: Substrate, pressing, sintering, and coating all managed in Zhuzhou, ensuring batch-to-batch consistency.
Grade Mapping by Application: We recommend specific grades based on your material (steel, stainless, cast iron) and operation (scarfing vs. deburring), not just the ISO code.
OEM/ODM Support: Custom laser marking, neutral or private-label packaging, and mixed-series starter kits (HDMB + SPUB + SNGN) for distributor shelves.
Free Sample Policy: 5-piece sample sets available for VMC or tube mill testing; FOB Zhuzhou/Shanghai with guaranteed repeat-lot lead times.
Inquiry Format: Tube/Pipe Outer Diameter × Wall Thickness / Material / Operation (Scarfing/Deburring/Finishing) → Receive code + grade + sample plan within 2 working days.
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