Krishna Machine Tools Honing Machines

Which Krishna honing machine fits your application?

The VHM1000 H/E and HHM 4000 suit different workpiece sizes and loading arrangements. Use these checks to narrow your selection, then review the part drawing with the supplier.

VHM1000 H/E: vertical honing for bores up to 450 mm

The VHM1000 H/E is an option for components that can be handled vertically and need a honing stroke of up to 1,000 mm. Its four configurations offer different control arrangements.

Vertical honing machine

Hydraulic and servo-based control options

Krishna Machine Tools lists a 20–450 mm bore range and a 1,000 mm maximum stroke for the VHM1000 H/E. The configurations are Basic, Schlau, EVO and Intelli. Intelli combines hydraulic stroking with a servo spindle and servo expansion; the product page describes the other configurations as hydraulic.

Listed bore range 20–450 mm

Listed stroke range 200–1,000 mm

Maximum stroke 1,000 mm

Configurations Basic · Schlau · EVO · Intelli

The product page gives capacity and control specifications. Cycle time, achievable tolerance and surface finish still need to be established for your component and process conditions.

HHM 4000: horizontal honing with a 4,000 mm stroke

The HHM 4000 is designed for long workpieces that are easier to support and hone horizontally, including cylinders and tubes.

Horizontal honing machine

Two bore ranges for long cylinders and tubes

The HHM 4000 is a hydraulically operated machine with a 4,000 mm stroke. Krishna Machine Tools describes it for stroke requirements of approximately 750–4,000 mm and lists two bore ranges: 50–550 mm and 50–800 mm.

Stroke length 4,000 mm

Recommended stroke range 750–4,000 mm

Bore option 1 50–550 mm

Bore option 2 50–800 mm

HMI 7-inch touch screen

Spindle power options 12.5 · 15 · 20 Hp

The listed outside-diameter (OD) clamping capacity is up to 650 mm for the 50–550 mm bore version and up to 1,000 mm for the 50–800 mm version. Have the supplier check the workholding arrangement for your part; maximum OD alone does not establish whether it can be clamped properly.

VHM1000 vs. HHM 4000: compare the main differences

Workpiece length and loading orientation are the main differences between these machines. The VHM1000 offers vertical honing with several control configurations, while the HHM 4000 provides a longer stroke in a horizontal layout.

Krishna honing machine comparison

A 300 mm bore falls within both machines' listed diameter ranges. Bore length, component weight and loading access may still make only one of them practical.

Other Krishna honing machines

Krishna Machine Tools also lists equipment for servo-controlled honing, blind bores and other stroke lengths. If the VHM1000 or HHM 4000 does not match your part, check these options.

Other models and configurations

Reference: VHM Schlau product information

Servo control and gauging: check what each configuration includes

Control features vary across the Schlau range and other servo-based machines. Confirm each function against the model and configuration in your quotation.

Applications covered by the Krishna range

Krishna Machine Tools describes applications from engine cylinders and liners to long hydraulic cylinders and blind bores. Ask the supplier to assess your drawing before treating an application example as a match for your part.

• Hydraulic cylinders and long-bore tubes
• Engine cylinders and cylinder liners
• Suspension-cylinder blind bores
• Selected defence components with blind bores
• Long-bore components for oil and gas applications
• Components in materials the company identifies, including stainless steel, titanium and Inconel

Material is only one part of the process specification. Tooling, abrasives, hardness, stock allowance, bore interruptions, wall thickness and required surface texture also affect machine suitability.

What to include in a Krishna honing machine RFQ

Give the supplier a clear description of the workpiece and the result you need. Include the following in your request for quotation:

• Workpiece drawing with bore geometry and datums
• Bore diameter, bore length and overall component dimensions
• Through-bore or blind-bore configuration
• Material, heat treatment, hardness and any internal coating
• Incoming bore diameter and expected variation
• Stock allowance for honing
• Final bore diameter and dimensional tolerance
• Roundness, cylindricity, straightness and taper requirements
• Surface roughness and crosshatch requirements
• Measurement method and inspection standard
• Monthly production volume and shift pattern
• Target cycle time
• Loading, unloading and automation requirements
• Available floor space, power supply and coolant conditions
• Service response, spare-parts and training requirements

If the purchase depends on a particular cycle time, surface finish or bore tolerance, ask for a trial on your component before approving the machine specification.

Krishna honing machine FAQs

What types of honing machines does Krishna Machine Tools manufacture?

HONING WORLD by Krishna Machine Tools lists vertical, horizontal and servo honing machines, along with honing heads and related equipment. The choice depends on bore dimensions, part geometry, loading position and process-control needs.

What is the bore range of the Krishna VHM1000?

The VHM1000 H/E product page lists a 20–450 mm bore range and a 200–1,000 mm stroke range. Confirm the required tolerance and surface finish separately for your component.

What is the capacity of the Krishna HHM 4000?

The HHM 4000 has a listed 4,000 mm stroke and is described for stroke requirements of approximately 750–4,000 mm. The two bore options are 50–550 mm with OD clamping up to 650 mm, and 50–800 mm with OD clamping up to 1,000 mm.

Which Krishna honing machine is suitable for long hydraulic cylinders?

Consider the HHM 4000 when the cylinder needs horizontal support during honing. Check its capacity against the bore length and diameter, outside diameter, component weight and clamping arrangement. Material, stock removal and surface requirements also need to be reviewed.

Does Krishna Machine Tools offer servo-controlled honing?

Yes. The VHM1000 Intelli configuration is described with hydraulic stroking, a servo spindle and servo expansion. The Schlau range also lists servo expansion, automated taper correction and in-process gauging. Availability depends on the model and configuration.

Can a component be tested before buying a honing machine?

Krishna Machine Tools advertises an in-house honing job-work and process-trial facility in Bengaluru. It describes testing customer parts for cycle time, surface finish and tolerance before equipment purchase. Agree on the trial scope, sample quantity and acceptance method in advance.

Does Krishna Machine Tools provide honing tools and spare parts?

The company sells manual expansion honing heads and other honing products. It also says it stocks standard spares, expansion assemblies and abrasives in Bengaluru. Check availability and delivery dates for the parts your machine will need.