Precision Turned Components

Precision SS 304 Sleeve Bushing Manufacturer India

High-performance Stainless Steel (SS 304) sleeve bushings engineered for critical shaft alignment and frictionless rotation. CNC turned and internally honed to an exacting ±0.005mm tolerance, ensuring a perfect press-fit that eliminates vibration. Corrosion-proof and wear-resistant for demanding industrial, automotive, and food-grade applications. Exported globally from Mumbai.

Tight Tolerance Fit
Smooth Shaft Rotation
Wear Resistant Machining
Corrosion Proof SS 304
±0.005mm Concentricity
Custom Export Ready
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50+ Years Experience ISO Quality Standards Global B2B Supply
Precision SS 304 Sleeve Bushing Internal Honed Bearing Surface Stainless Steel Shaft Alignment Bushing CNC Turned Bushing Quality Inspection
SS 304 Bushing
SS 304 Bushing
Internal Bore
Internal Bore
Side Profile
Side Profile
Smooth Finish
Smooth Finish
1975
Engineering Legacy
±0.005
mm Bore Tolerance
100%
Concentricity Tested
40+
Countries Exported To
Product Overview

High-Performance SS 304 Sleeve Bushings

In mechanical assemblies, the alignment and rotation of a shaft dictate the lifespan of the entire machine. Sleeve bushings (also known as plain bearings or sleeve bearings) serve as the critical interface between a moving shaft and its housing, absorbing friction, reducing vibration, and ensuring flawless rotary or linear motion.

At OM Engineering Works, we manufacture these specialized components using our advanced CNC turning and internal boring infrastructure. Achieving a perfect press-fit requires maintaining an ultra-tight ±0.005mm tolerance on the outer diameter (OD), while the inner diameter (ID) must be perfectly concentric to prevent the shaft from binding or wobbling.

While brass and bronze are traditional bushing materials, our SS 304 sleeve bushings are engineered for environments where standard metals fail. Stainless steel provides superior wear resistance under high-torque loads and is naturally impervious to rust, making it the premier choice for chemical processing pumps, marine equipment, and food-grade conveyor systems.

Key Features of Our Precision SS Bushings:

  • Ultra-Tight Tolerances: Machined to ±0.005mm to ensure H7/g6 or customized interference fits within housings.
  • Superior Concentricity: Internal and external diameters are turned in a single setup on our Traub and CNC lathes to guarantee absolute runout accuracy (zero wobble).
  • Corrosion Resistance: 100% genuine SS 304 construction prevents oxidation, even in high-moisture or washdown environments.
  • Smooth Machined Finish: The internal bore is reamed or honed to a low Ra surface finish, significantly reducing frictional heat generation against the rotating shaft.

Why Source from OM Engineering Works?

  • Scale & Precision: We combine the high-volume speed of automated turning with the micro-precision of custom CNC job work, delivering flawless batches on time.
  • Certified Materials: We only use verifiable SS 304 solid bar stock, accompanied by full Material Test Certificates (MTC) for OEM compliance.
  • Global Export Expertise: From our facility in Mumbai, we securely package and export heavily machined components to automotive and industrial clients worldwide.
Technical Details

Sleeve Bushing — Specifications

Dimensional & Machining Specs

Inner Diameter (ID) Range 5mm to 100mm (Custom sizes available)
Outer Diameter (OD) Range 8mm to 150mm (Custom sizes available)
Dimensional Tolerance ±0.005mm on ID and OD
Concentricity (TIR) < 0.01mm for high-speed shaft alignment
Surface Finish (Bore) Smooth Machined (Reamed/Honed to Ra 0.4 - Ra 0.8)
Manufacturing Process CNC Turning, Traub Machining, Precision Boring, ID Grinding
Wall Thickness Ultra-thin wall to heavy-wall configurations supported
Features Options Oil grooves, lubrication holes, flanges, chamfers available

Material & Performance Specifications

Primary Material Stainless Steel 304 (SS 304 / 1.4301)
Alternative Materials SS 316, SS 410, Phosphor Bronze, Leaded Gunmetal (On request)
Standard Finish Natural Smooth Machined (Ultrasonically Cleaned)
Hardness Standard SS 304 annealed hardness (or work-hardened as required)
Corrosion Resistance Excellent resistance to water, mild chemicals, and organic environments
Operating Temperature Can withstand cryogenic to high-heat conditions without deformation
Compliance Food-grade compatible, RoHS compliant
Certifications EN 10204 3.1 Material Test Certificates (MTC) provided
Our Expertise

How We Manufacture Precision Bushings

01
Premium SS 304 Bar Sourcing

We source certified solid round bars or thick-walled seamless tubes of SS 304. Verifying the chemical composition via MTC is crucial, as the correct nickel and chromium content dictates the metal's machinability and final corrosion resistance.

02
CNC Turning & OD Machining

The raw stock is fed into our highly rigid CNC turning centers. The Outer Diameter (OD) is precision turned to achieve the exact tolerance required for the bushing to press-fit into the client's housing block without warping or slipping.

03
Precision ID Boring & Reaming

This is the most critical phase. The Inner Diameter (ID) is bored out, and then a precision reamer or internal grinding tool is used to achieve a mirror-like finish (low Ra). We hold the ID to a ±0.005mm tolerance to ensure the rotating shaft has perfect clearance—not too tight to seize, not too loose to vibrate.

04
Secondary Operations (Grooving)

If the design requires lubrication, the bushing is moved to a 4-axis milling center to add internal spiral oil grooves, straight grease channels, or through-holes to ensure the shaft remains properly lubricated during high-speed rotation.

05
Deburring & Ultrasonic Cleaning

SS 304 can be tough to machine and often leaves micro-burrs. The bushings are thoroughly deburred and passed through an ultrasonic cleaning bath to remove all traces of cutting fluids, swarf, and contaminants, delivering a pure, clean surface.

06
Air Gauging & Export QA

Because ±0.005mm cannot be measured accurately with standard calipers, we utilize pneumatic air gauges or digital bore micrometers to verify the ID. Passed batches are individually wrapped to protect the precision surfaces and packed in export-grade cartons.

Machines & Equipment

  • High-Precision CNC Lathes
  • Traub Single Spindle Automats
  • Carbide Boring Bars & Reamers
  • ID Cylindrical Grinders
  • Ultrasonic Cleaning Stations

Quality Control

  • Digital Bore Micrometers
  • Air Gauges for sub-micron checking
  • Surface Roughness Testers
  • Concentricity Mandrels
  • Material Test Certificates (MTC)
Material Options

Materials for Precision Bushings

Stainless Steel 304 (SS 304)

Properties: An austenitic stainless steel offering excellent corrosion resistance, high structural strength, and good wear characteristics against softer steel shafts. Unlike brass or bronze, SS 304 will not degrade when exposed to harsh cleaning chemicals or food byproducts.

Best For: Food processing machinery, packaging lines, marine equipment, pharmaceutical pumps, and environments requiring frequent washdowns.

Standards:

UNS S30400 EN 1.4301 AISI 304

Phosphor Bronze / Leaded Gunmetal (On Request)

Properties: The traditional material for friction bearings. Bronze alloys contain elements like phosphorus or lead that act as internal solid lubricants. They are softer than steel shafts, meaning the cheaper bushing will intentionally wear down before the expensive shaft does.

Best For: High-speed internal combustion engines, heavy earth-moving equipment linkages, and systems where continuous oil lubrication is present.

Standards:

PB1 / PB2 LG2 / LG4 SAE 660
Applications

Industries Relying on Our SS Bushings

Pumps & Motors

Ensuring perfectly aligned, vibration-free rotation of impellers and drive shafts within fluid handling pumps.

Food Processing

SS 304 provides the non-toxic, rust-free, washdown-ready performance required for food-grade conveyors and mixers.

Automotive Assemblies

Used in heavy-duty linkages, steering columns, and transmission systems where exact shaft alignment is critical.

Marine Equipment

Corrosion-proof bushings for deck machinery, winches, and rudder assemblies exposed to harsh oceanic environments.

Product Comparison

OM Engineering Bushings vs Standard Bushings

Feature / Capability OM Engineering Works Standard Off-the-Shelf Bushing
Bore Tolerance (ID) ±0.005mm (Precision Bored/Honed) ±0.05mm (Loose, causes shaft wobble)
Concentricity (TIR) < 0.01mm (Single setup turning) Inconsistent, leads to uneven wear
Material Traceability Verified SS 304 with MTC Unknown mixed steel grades
Custom Lubrication Custom oil grooves and holes available Plain sleeve only
Surface Finish Smooth Machined (Low Ra) Rough turned, creates high friction
Common Questions

SS 304 Precision Bushings — FAQs

A sleeve bushing is a cylindrical plain bearing inserted into a housing to provide a low-friction, perfectly aligned guide for a rotating or sliding shaft. Unlike ball bearings, they have no moving parts. They absorb the wear and tear of rotation, ensuring the expensive machinery shaft remains aligned, vibration-free, and undamaged over time.

Bronze is excellent for high-speed engines where constant oil lubrication is present. However, SS 304 is chosen when the bushing must operate in harsh, wet, or sanitary environments (like food processing or marine pumps) where bronze would corrode or contaminate the product. SS 304 offers immense structural strength and complete immunity to rust without needing protective coatings.

If the inner bore of a bushing is even 0.05mm too large, the rotating shaft will have room to "wobble." At high RPMs, this microscopic wobble creates massive vibrations that destroy seals, break housings, and shatter shafts. Our ultra-precise ±0.005mm tolerance ensures the clearance is perfectly calibrated to accommodate a thin film of lubricant while holding the shaft perfectly rigid on its axis.

Yes. If your application requires active lubrication, we can utilize our multi-axis CNC milling centers to machine custom features into the bushing walls. This includes internal spiral oil grooves, figure-eight grooves, grease holes, or outer diameter flanges, all precisely matching your 2D or 3D CAD drawings.

Absolutely. We understand that international OEMs require strict material traceability. Every batch of SS 304 components manufactured in our Mumbai facility is accompanied by an EN 10204 3.1 Material Test Certificate, proving the exact chemical composition of the steel used.
Related Capabilities

Explore Our Other Precision CNC Manufacturing Services

Precision Turned Components

Explore our full range of CNC turned stainless steel, brass, and alloy parts engineered for extreme accuracy.

Traub Machining Job Work

High-volume automated Traub machining for rapidly producing smaller bushings and pins with highly repeatable accuracy.

Custom Engineered Components

From complex assemblies to specialized mechanical hardware, manufactured directly from your unique CAD models.

Require Precision Sleeve Bushings for Your Assemblies?

Share your ID/OD requirements, tolerance specs, or CAD drawings for a rapid quote. We guarantee ±0.005mm concentricity and supply verified SS 304 with full MTCs. Mumbai-based manufacturing, globally exported.

Request a Quote WhatsApp Quote +91 9324078101

Contact Info

24/A, Shreenath IND Estate, Navghar Rd, Bhayandar(E), 401105

+91 9324078101

omeprecisions@gmail.com

Mon - Sat: 09:00 AM - 09:00 PM

Our Services

Precision Turned Components Pipe & Tube Fittings Custom Components Rapid Prototyping & Small-Batch Traub Machining Job Work

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Why Choose Us

3rd Generation Engineering Legacy. Delivering absolute precision since 1975.

±0.005mm Micro-Tolerances

Verified SS 304 with MTC

Global OEM Export Experience

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