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SRUJAN caters to key sectors including Valve manufacturing, Automotive components, and Industrial machinery.
  • Engineering and Manufacturing of Special Purpose Machines (SPM)
  • Precision machining of Valve, Automotive and Industrial Components
  • Hydraulic Power Systems & Fluid Power Technology Solutions

Fine Boring Special Purpose Machine - Manufacturer & Exporter in India

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  • Fine Boring Special Purpose Machine - Manufacturer & Exporter in India
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Fine Boring SPM Fine Boring SPM

Srujan Group is a trusted Fine Boring Special Purpose Machine manufacturer and exporter in India, delivering precision-engineered SPMs designed exclusively for tight-tolerance internal diameter finishing operations on critical industrial components. With over 3.5 decades of SPM design and manufacturing experience and ISO 9001:2015 certification, Srujan Group builds Fine Boring SPMs that consistently achieve superior bore accuracy, roundness, and surface finish - meeting the most demanding quality requirements of valve, hydraulic, automobile, and precision engineering industries.

Fine boring is one of the most critical machining operations in precision component manufacturing where even a micron-level deviation in bore diameter, roundness, or surface finish can directly impact component performance, assembly fit, and service life. Our Fine Boring SPM is purpose-engineered to eliminate this risk, delivering consistent, repeatable bore quality across every component in high-volume production runs. Each machine is custom-designed around the client's component bore specifications, material, production targets, and tolerance requirements - ensuring optimum boring accuracy and cycle efficiency from day one.


Technical Specifications (General Standard)
Parameter Specification
Boring Diameter Range 20mm to 500mm (customisable)
Boring Depth Range Up to 600mm (customisable)
Diameter Tolerance IT6 / IT7 (±0.01mm or better)
Surface Finish (Ra) 0.4 µm to 1.6 µm
Roundness / Cylindricity ≤ 0.005mm
Spindle Speed Range 500 to 5000 RPM
Spindle Motor Power 2.2 kW to 15 kW (as per requirement)
Feed Drive Servo motor with precision ballscrew
Spindle Type Single / Multi-spindle (as per requirement)
Control System PLC-based / CNC-based
Component Holding Custom precision fixtures
Coolant System Included (high-pressure optional)
Power Supply 415V, 3-phase, 50Hz

Note: All specifications are fully customisable as per client component bore geometry and production requirements.

Why choose us

Srujan Group for Special Purpose Machines?

01
Expertise 3.5 decades of dedicated SPM design and manufacturing experience
02
In-House Manufacturing Complete in-house capability — design, fabrication, machining, assembly, and testing
03
ISO Certified Facility ISO 9001:2015 certified manufacturing facility in Ichalkaranji, Maharashtra
04
Custom engineering Custom engineering from concept to commissioning
05
Industry Clients Proven track record with leading valve and hydraulic industry clients
06
Quality Testing Competitive pricing with no compromise on quality
07
Support Installation, commissioning, and after-sales support included
Key Features of Srujan Fine Boring SPM
  • Purpose-built machine structure designed exclusively for high-precision fine boring operations
  • High-speed, high-rigidity precision spindle for consistent bore accuracy and surface finish
  • Servo-driven feed axis with precision ballscrew for accurate, backlash-free boring depth control
  • PLC / CNC control system for fully automated, repeatable boring cycles
  • Custom precision component holding fixtures for accurate, repeatable component location
  • Single or multi-spindle configuration for simultaneous boring of multiple bores
  • Fine boring tool holders with micron-level diameter adjustment capability
  • Integrated high-pressure coolant system for superior surface finish and tool life
  • Automatic bore gauging and in-process measurement option available
  • In-built safety interlocks and full guarding for operator protection
  • Compact machine footprint optimised for shop floor space efficiency
  • Low maintenance design with easy access to all mechanical and electrical components
Advantages of Srujan Fine Boring SPM
  • Micron-Level Bore Accuracy - Precision spindle and servo drives deliver consistent IT6/IT7 tolerance boring across every component
  • Superior Surface Finish - Achieves Ra 0.4 µm to 1.6 µm surface finish, eliminating the need for secondary honing operations
  • High Repeatability - Automated PLC cycles ensure uniform bore quality across complete production batches
  • Multi-Spindle Productivity - Simultaneous boring of multiple bores dramatically reduces cycle time and increases throughput
  • Reduced Scrap & Rework - Tight tolerance control and in-process gauging minimise component rejection
  • Lower Labour Dependency - Automated cycles require minimal operator skill and intervention
  • Eliminates Secondary Operations - Fine surface finish achieved in a single operation reduces overall process steps
  • Custom Engineered - Every machine is built specifically around your component bore specifications and production targets
Application Areas
Fine Boring Special Purpose Machine SPM are widely used across:

Valve Industry

Valve bodies, bonnets, stuffing box bores, and seat bores requiring tight diameter tolerances

Hydraulic Systems

Hydraulic cylinder bores, manifold block ports, pump housings, and motor bodies

Automobile & Auto Components

Engine cylinder bores, connecting rod bores, transmission housings, and brake caliper bores

Aerospace & Defence

Precision structural components, actuator housings, and hydraulic system components

Compressor & Pump Industry

Compressor cylinder bores, pump casing bores, and impeller housings

Bearing & Bushing Industry

Bearing housing bores and bushing outer diameter finishing

Agricultural Equipment

Hydraulic cylinder and gear housing bores for tractors and farm machinery

General OEM & Precision Engineering

Any component requiring tight-tolerance, high-surface-finish internal bore finishing
FAQ Fine Boring SPM

  • What is a Drumcam Groove Milling Special Purpose Machine?
  • What types of groove profiles can be milled on Srujan Group's Drumcam Groove Milling SPM?
  • What drum cam sizes can be machined on this SPM?
  • What is the groove width tolerance achievable on Srujan's Drumcam Groove Milling SPM?
    Srujan Group's Drumcam Groove Milling SPM achieves groove width tolerances of ±0.05mm or better — ensuring precise groove geometry that meets the strict dimensional requirements of automobile, textile, and industrial automation applications.
  • What industries use Drumcam Groove Milling Special Purpose Machines?
    Drumcam Groove Milling SPMs are widely used in automobile and auto components, textile machinery, packaging machinery, industrial automation, agricultural equipment, printing machinery, material handling equipment, and general OEM manufacturing wherever precision groove milling on drum cam components is required at high volumes.
  • How does a Drumcam Groove Milling SPM differ from a conventional CNC milling machine?
    A conventional CNC milling machine is a general-purpose machine requiring skilled programming and setup for each component. A Drumcam Groove Milling SPM is purpose-built for dedicated drum cam groove milling — offering a synchronised rotary and linear servo drive system, custom component holding fixtures, automated PLC cycles, and optimised cutting parameters specifically for drum cam geometry. This results in significantly higher throughput, better groove accuracy, and lower per-piece cost in dedicated production.
  • Can Srujan Group build a Drumcam Groove Milling SPM as per my component drawing?
    Yes. Srujan Group specialises in designing and manufacturing custom Drumcam Groove Milling SPMs based on client-provided drum cam drawings, groove profile specifications, production targets, and cycle time requirements. Our engineering team manages the complete project from machine concept and design to fabrication, assembly, testing, and on-site commissioning.
  • What control system is used in Srujan Group's Drumcam Groove Milling SPM?
    Srujan Group's Drumcam Groove Milling SPMs are available with PLC-based automatic control or CNC-based control systems depending on the complexity of groove profiles, client automation requirements, and operator skill level. Both systems ensure fully repeatable, accurate groove milling cycles with minimal operator intervention.
  • Is Srujan Group an ISO certified Drumcam Groove Milling SPM manufacturer?
    Yes. Srujan Group is an ISO 9001:2015 certified Drumcam Groove Milling SPM manufacturer and exporter based in Ichalkaranji, Maharashtra, India. Every machine is designed, fabricated, assembled, and tested under a strict quality management system - ensuring reliable performance and accurate groove geometry in every production run.
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