KTG2120×2000 CNC Skiving and Roller Burnishing Machine: Acceptance Record

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Update time : 2026-10-10

This anonymized project record covers one KTG2120×2000 CNC skiving and roller burnishing machine supplied for hydraulic-cylinder bore finishing. The source set includes a signed technical agreement and a signed equipment acceptance form. Customer-identifying and commercial information is intentionally withheld.

Evidence scope

The figures below are requirements recorded in the technical agreement. The signed acceptance form confirms completion of installation and commissioning, normal machine operation, and acceptance as qualified. It does not include the raw inspection sheet or individual measured values, so agreement targets are not presented as measured results.

KTG2120 2000 CNC skiving and roller burnishing machine model-family workshop view — KTG2120 model-family workshop image. The image shows the machine type and is not presented as customer-site evidence.

Project purpose and recorded workpiece range

The agreement defines the machine for precision finishing of hydraulic-cylinder inner bores. Recorded workpiece materials include 20 steel, 45 steel, 25Mn and 27SiMn. The stated processing range is:

Workpiece inner diameter: Ø40–Ø200 mm
Workpiece outer diameter: Ø50–Ø260 mm
Processing length: 300–2,000 mm
Skiving and roller-burnishing diameter: Ø40–Ø200 mm

Agreement process and acceptance targets

The technical agreement records a combined skiving and roller-burnishing route for the cylinder bore. Its project targets are dimensional grade IT7–IT8, surface roughness Ra 0.05–0.2 μm, and cylindricity not exceeding one half of the bore-diameter tolerance. Recommended diameter allowances in the agreement are 0.3–0.4 mm for Ø40–Ø60, 0.4–0.5 mm for Ø63–Ø90, 0.5–0.8 mm for Ø100–Ø125, and 0.8–1.0 mm for Ø140–Ø200.

These values remain contractual criteria for this project. Without the original measurement log, they should not be read as independently verified production data.

Recorded machine configuration

Z-axis travel: 2,500 mm
Spindle speed: 50–1,200 r/min
Spindle servo power: 37 kW
Positioning-seat travel speed: 2,000 mm/min
Spindle-box rapid travel: 8,000 mm/min
Cooling tank: approximately 2,000 L
High-pressure pump flow: greater than 500 L/min
Filter rating: 50 μm

Final machine selection still depends on the actual material condition, starting bore, stock allowance, geometry requirement, tooling, coolant, inspection method and production plan.

Acceptance method and documented result

The agreement calls for continuous processing of ten cylinder barrels, followed by checks for bore-size consistency, dimensional grade and surface finish. The separate signed equipment acceptance form states that installation and commissioning were completed, the machine operated normally after commissioning, and the equipment was accepted as qualified.

No customer name, contact details, price, payment terms, tax information, bank information, signatures, seals or complete commercial documents are published on this page.

Planning a comparable hydraulic-cylinder bore project

For a comparable application, send the bore diameter and depth, material, starting condition, allowance, target tolerance, roughness, straightness or cylindricity requirement, batch size and inspection method. Review the CNC skiving and roller burnishing machine range, or send your workpiece data for an engineering review.