0μm Filtration Deep Hole Honing Machine Ra0.2‑0.4μm Finish

1. High‑Rigidity Cast Machine Bed

The bed is integrally cast by HT300 high‑strength cast iron with normalization and twice aging stress‑relief treatment. Rolling linear guide rails are installed for reciprocating travel of honing box. Precision heat‑treated helical rack is arranged inside the bed for stable power transmission. Oil‑receiving trough is arranged around bed frame to collect honing oil and prevent liquid overflow. Multiple movable honing‑bar supports are configured along guide rail to absorb tool vibration in long‑stroke honing.

2. Honing Spindle Box

The honing box is driven by 7.5 kW variable‑frequency motor through gear reduction unit. Gears are precision‑ground and high‑frequency quenched to reach tooth‑surface hardness HRC48‑52, with high strength and impact resistance. Spindle adopts combined cylindrical‑roller plus thrust‑ball bearing configuration to bear large axial and radial cutting force. Internal gear‑splash lubrication ensures long service life of transmission parts. Spindle rotation speed is stepless adjustable within 10‑260 r/min.

3. V‑Type Workpiece Carriers & Pipe‑Chain Clamping System

Equipped with two sets of V‑shape workpiece carriers. V‑blocks realize centering adjustment via positive‑reverse lead‑screw. Workpieces rest on V‑blocks and are firmly locked by pipe‑chain clamp. Anti‑slip liners are pasted on V‑block contact surface to prevent workpiece rotation during honing. The carriers can be manually adjusted to adapt workpieces of different outer diameters.

4. Multi‑Set Honing‑Bar Supports

Total two sets honing‑bar supports: one fixed support mounted on bed, one movable support sliding on linear guide rail. They firmly hold long honing mandrel, reduce tool shaking and improve hole straightness and inner‑surface finish in 2‑meter long‑stroke honing process.

5. Integrated Honing Oil Cooling & Dual‑Stage Filtration System

Complete cooling‑circulation unit is equipped for external oil‑spray supply. Max flow rate reaches 100 L/min. It combines paper‑tape filter and magnetic‑roller filter, final filtration precision up to 20 μm, to remove fine metal abrasives and protect honing head and prolong service life of honing oil. Pressure, flow and liquid‑level data can be checked on the operation touch‑screen.

6. Lubrication & Oil‑Baffle Device

Automatic lubrication station provides timing‑quantitative lubrication for guide‑rail sliders with low‑liquid‑level alarm function. Gears and bearings inside honing box adopt splash lubrication. Two movable oil‑baffle assemblies are installed at workpiece inlet and outlet to block splashing honing oil and keep workshop tidy.

7. Delta PLC Intelligent Control System

Adopt Delta PLC plus rotatable touch‑screen HMI. Operators can set honing‑box reciprocating speed, spindle rotating speed and honing‑head expansion parameters directly on screen. Multiple safety interlock protections are integrated: lubrication shortage alarm, coolant liquid‑level protection, spindle & feed motor overload protection, pump fault alarm and travel‑limit protection. Electric cabinet is configured with air‑conditioner for stable operation of electrical components.

Core Machining Accuracy

Tested with E355(+SR) tube conforming to EN10305 standard:

Roundness tolerance: ≤0.01 mm

Straightness tolerance: ≤0.05 mm per 1500 mm length

Inner‑hole surface roughness: Ra0.2‑0.4 μm

Main Technical Parameters

Processing Range Honing diameter: Φ40‑Φ200 mm Max honing depth: 2000 mm Max workpiece length: 2000 mm Workpiece outer diameter: Φ60‑Φ300 mm Max workpiece weight: 3 tons Machine floor dimension:7.5m × 2.5m, total installed power:14.5 kW

Honing‑Box Unit Spindle speed: 10‑260 r/min stepless, main motor 7.5 kW variable‑frequency motor

Feed & Honing‑Head Expansion Z‑axis reciprocating feed speed:1‑18 m/min, servo motor 4.3 kW /27 Nm Honing‑head expand‑contract servo motor:0.75 kW /2.39 Nm

Cooling‑Filtration System Max coolant flow:100 L/min, filtration precision:20 μm

Standard Equipped Parts

Heavy‑duty HT300 cast bed, honing spindle box, two sets V‑type workpiece carriers, two sets honing‑bar supports, complete cooling‑filtration unit, Z‑axis servo feed carriage, automatic lubrication station, Delta PLC control cabinet with air‑conditioner, two‑set movable oil‑baffle devices, machine leveling wedges & anchor bolts, full mechanical‑electrical operation manuals, foundation drawing, factory inspection certificate.

Optional Custom Accessories

Custom‑size honing heads, honing bars and matching auxiliary sleeves; special honing oil; customized fixtures; upgraded filter units; voltage‑transformer for different‑country power supply.

Main Famous‑Brand Core Components

Control System: Delta PLC + Touch‑screen HMI

Honing‑box main motor: Domestic well‑known variable‑frequency motor

Spindle bearings: Domestic top‑grade bearing brand

Precision rack: Taiwan YYC or equivalent brand

Feed servo motors: Domestic well‑known brand

Low‑voltage electrical parts: SIEMENS / SCHNEIDER

Applicable Processing Workpieces

This long‑stroke deep hole honing machine is specially used for precision inner‑hole finishing of hydraulic and pneumatic cylinder barrels:

Hydraulic industry: hydraulic cylinder tube full‑length honing; repair taper, ovality and local aperture defects

Pneumatic equipment: large‑size air cylinder inner‑hole precision finishing

Engineering machinery: medium‑long heavy cylinder barrel honing processing

General heavy‑industry: seamless tubular workpiece inner‑hole correction and high‑gloss finishing

Official Website Links

Deephole series Web: www.dzgljc.com

Heavy duty lathe series Web: www.novatechlathe.com

Contact Information

Contact me: Tina

WhatsApp:+86 17857586156

Email: dezhou@dzguanlu.com

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