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KULA CNC Deep Hole Honing Machines are designed for long bore finishing applications that require high straightness, accurate cylindricity and stable surface quality. They are suitable for hydraulic cylinders, pneumatic cylinders, crankshaft bores, aerospace components, heavy machinery parts and other workpieces with deep or narrow internal holes.
Compared with a CNC Vertical Honing Machine or a CNC Horizontal Honing Machine, a CNC deep hole honing machine focuses on longer machining length, stronger honing rod support, stable oil injection, efficient cooling and precise CNC feed control. As part of KULA’s CNC Honing Machine product line, this series is built for demanding long bore finishing in automotive, aerospace, hydraulic and heavy equipment manufacturing.
The Industrial Deep Hole CNC Crankshaft Bore Reaming And Honing Machine is designed for high-precision crankshaft bore finishing. It is suitable for automotive, aerospace and heavy machinery applications where crankshaft bores require stable dimensional accuracy, reliable coaxiality and high-quality internal surface finish.
This machine integrates CNC program management, tool wear compensation, servo feed control, automatic lubrication, and an advanced cooling and filtration system. With precise stroke and feed control, it helps maintain consistent bore geometry during long processing cycles. It is especially suitable for production environments that require high-accuracy crankshaft bore reaming and honing.
The HMT Series Heavy Duty CNC Deep Hole Honing Machine is built for large components and long bore finishing. It is suitable for hydraulic cylinders, aerospace parts, heavy machinery components and other industrial workpieces that require extended machining length, stable internal cooling and accurate surface finishing.
This series features an advanced spindle drive, servo motor feed, tool wear compensation, efficient cooling and filtration, and an optimized honing rod with internal oil injection. It supports high-precision deep hole honing for complex workpieces and can be customized according to bore diameter, machining length, fixture structure and production requirements.
A CNC deep hole honing machine is used when standard honing equipment cannot provide enough machining length, internal lubrication or bore stability. It is especially important for long holes where straightness, roundness, cylindricity and surface finish directly affect part performance.
Suitable for long bore finishing and deep internal hole processing
Designed for hydraulic cylinders, crankshaft bores, aerospace parts and heavy machinery components
Helps improve hole straightness, bore geometry and surface quality
CNC feed control improves repeatability during long processing cycles
Cooling and filtration systems help maintain stable machining temperature
Tool wear compensation helps maintain consistent machining accuracy
Custom configurations are available for different bore diameters and machining lengths
KULA CNC deep hole honing machines are widely used in industries where long internal bores must meet strict accuracy and surface requirements. They are suitable for both precision component finishing and heavy-duty industrial machining.
Hydraulic cylinders: long bore finishing for hydraulic cylinder tubes and sleeves
Pneumatic cylinders: smooth internal surface processing for pneumatic cylinder components
Crankshaft bores: reaming and honing for crankshaft bore accuracy and coaxiality
Aerospace components: high-precision deep hole finishing for critical parts
Heavy machinery: long bore processing for construction machinery and industrial equipment parts
Automotive manufacturing: crankshaft and engine-related components requiring accurate internal holes
Deep hole honing machines are designed for workpieces with longer internal holes. The machine structure, honing rod design and cooling system support stable processing over extended machining lengths.
CNC control allows more accurate adjustment of stroke, feed and honing parameters. This helps maintain repeatable machining quality across different workpieces and production batches.
Tool wear compensation helps maintain consistent bore accuracy during long honing cycles. It reduces manual correction and supports stable processing for high-precision deep hole applications.
Deep hole honing requires reliable cooling and chip removal. KULA machines can be equipped with paper filters, magnetic separators, oil coolers and internal oil injection structures to improve lubrication, filtration and surface quality.
The honing rod structure plays an important role in long bore processing. Internal oil injection improves lubrication and chip removal, helping to maintain surface quality and machining stability.
Different deep hole applications require different machine structures, tooling, fixtures and control systems. KULA can provide custom configurations according to workpiece material, bore size, machining length and production process.
KULA CNC deep hole honing machines can be selected according to machining diameter, machining length, spindle speed, stroke drive, feed control, cooling system and workpiece clamping requirements. The following information can be used as a reference before confirming the final machine configuration.
| Model / Series | Typical Application | Machining Diameter | Machining Length / Stroke | Key Features |
|---|---|---|---|---|
| HM80150 | Crankshaft bore reaming and honing | ∅30-∅80mm | Stroke length 1500mm | 0.1μm feed resolution, tool wear compensation, cooling filtration, crankshaft bore accuracy |
| HMTC3500 | Heavy-duty deep hole honing | ∅30-∅500mm | 500-12000mm | Servo feed, internal oil injection, cooling system, long bore processing |
| Extended Configuration | Large diameter and extra-long workpieces | ∅500-∅1000mm | 0-18m | Customized structure for large industrial components |
| Machine Type | Best For | Typical Workpieces | Key Advantage |
|---|---|---|---|
| CNC Vertical Honing Machine | Small and medium parts requiring vertical stroke control | Cylinders, bearings, gears, valve blocks and engine blocks | Compact loading, high repeatability and stable vertical bore finishing |
| CNC Horizontal Honing Machine | Small precision parts and horizontally supported components | Connecting rods, gears, stators, guiding sleeves and automotive parts | Convenient loading, stable stroke movement and flexible processing |
| CNC Deep Hole Honing Machine | Long bore, hydraulic cylinder and crankshaft applications | Hydraulic cylinders, crankshaft bores, aerospace parts and heavy machinery components | Long machining length, deep bore accuracy and efficient cooling performance |
A CNC deep hole honing machine is recommended when the workpiece has a long internal bore, strict straightness requirements or a high demand for surface finish. It is also suitable when the machining process requires strong cooling, internal lubrication and stable tool support over a long stroke.
Choose deep hole honing for hydraulic cylinder tubes and long sleeves
Choose it for crankshaft bores requiring coaxiality and high surface quality
Choose it when the machining length is beyond standard vertical or horizontal honing capacity
Choose it when internal cooling and chip removal are critical to machining stability
Choose it for heavy-duty components that require customized clamping and tooling
For shorter bores, cylinders or compact parts, a CNC Vertical Honing Machine may be more suitable. For small precision parts that need horizontal support, a CNC Horizontal Honing Machine can be considered.
Deep hole honing projects often require customized machine structures, fixtures, honing tools, cooling systems and control programs. KULA provides custom CNC grinding and honing solutions according to workpiece drawings, bore diameter, machining length, material, tolerance requirements and production capacity.
KULA’s custom CNC grinding and honing service includes machining proposal support, tool and fixture planning, machine configuration, training, installation, commissioning and after-sales service.
Before selecting a CNC deep hole honing machine, it is important to evaluate the workpiece structure, bore diameter, bore depth, material hardness, required surface finish, tolerance level, production volume and clamping method. KULA can recommend a suitable machine model and tooling solution after reviewing drawings and processing requirements.
Confirm bore diameter and total machining length
Check straightness, roundness, cylindricity and surface roughness requirements
Confirm workpiece material and hardness
Evaluate whether internal oil injection or high-flow cooling is required
Confirm fixture, clamping and loading requirements
Decide whether standard configuration or customized long bore solution is needed
Share drawings and production requirements for machine selection support
A CNC deep hole honing machine is used for precision finishing of long internal bores. It helps improve bore straightness, roundness, cylindricity and surface finish in hydraulic cylinders, crankshaft bores, aerospace parts and heavy machinery components.
Deep hole honing is suitable for hydraulic cylinders, pneumatic cylinders, crankshaft bores, long sleeves, aerospace components, construction machinery parts and other workpieces with long or narrow internal holes.
Standard honing is often used for shorter bores or smaller components. Deep hole honing is designed for longer machining lengths and usually requires stronger honing rod support, internal oil injection, efficient cooling and stable chip removal.
Yes. CNC deep hole honing machines are commonly used for hydraulic cylinder bore finishing. They help improve internal surface quality and dimensional accuracy for long cylinder tubes.
Yes. KULA can customize machine structure, machining length, bore diameter range, tooling, fixtures, cooling system and control configuration according to the workpiece and production process.
Deep hole honing is recommended for long bores, hydraulic cylinders and heavy-duty components. Horizontal honing is more suitable for small precision parts that need horizontal support and shorter stroke processing.
If your production requires long bore finishing for hydraulic cylinders, crankshaft bores, aerospace components or heavy machinery parts, KULA can provide CNC deep hole honing machine selection support, customized tooling and complete honing process solutions. Send us your workpiece drawings, bore diameter, machining length, material and accuracy requirements, and our engineering team will recommend a suitable deep hole honing solution.
