Diamond Lapping Compounds

High-Performance Diamond Compounds for Precision Lapping, Polishing & Superfinishing Applications

JPT Diamond Lapping Paste and Diamond Slurry are premium-grade precision finishing compounds manufactured using accurately graded natural and synthetic diamond micron powders for ultra-fine lapping, polishing, honing, and superfinishing operations.

These compounds are specially engineered for high-precision industries requiring:

• Scratch-free surface finishing
• Controlled stock removal
• Mirror surface generation
• Superior dimensional accuracy
• Ultra-low surface roughness values

JPT Diamond Compounds are extensively used in precision engineering, tool manufacturing, optics, semiconductor, carbide tooling, aerospace, medical, and die & mold industries.

JPT Diamond Lapping Paste is manufactured using:

• Uniformly graded diamond micron powders
• Controlled particle size distribution
• Sharp crystalline diamond structures
• Heat-resistant carrier compounds
• High-performance lubricant systems

The uniform distribution of diamond particles ensures:

• Maximum particle utilization
• Fast stock removal
• Uniform cutting action
• Scratch-free finishing
• Excellent surface integrity

Well-Graded Diamond Powder

Accurately classified diamond particles provide:

• Consistent cutting performance
• Uniform surface finish
• Controlled material removal
• Reduced surface pitting
• Improved polishing efficiency

Practically all particles remain active during the lapping process, resulting in:

• Higher productivity
• Superior finish quality
• Excellent repeatability

Poorly Graded Diamond Powder

Non-uniform diamond powders may cause:

• Uneven cutting action
• Random deep scratches
• Surface pitting
• Inconsistent stock removal
• Reduced polishing efficiency

Only oversized particles remain active while finer particles become ineffective.

Premium Diamond Micron Powder

Manufactured using:

• Natural diamond micron powder
• Synthetic diamond powder
• Blocky crystal structures
• Sharp-edged diamond particles

Providing:

• Aggressive yet controlled cutting action
• Superior polishing efficiency
• Long working life

Controlled Particle Size Distribution

Diamond particles are:

• Microscopically graded
• Accurately classified
• Agglomerate-free
• Uniformly dispersed

Ensuring:

• Stable lapping performance
• Repeatable surface finish quality
• Consistent stock removal rates

Heat Resistant Carrier System

Specially formulated carriers offer:

• Stable viscosity over wide temperature ranges
• Excellent lubrication properties
• Reduced heat generation
• Improved particle suspension

Water Soluble Diamond Paste

Completely soluble in:

• Water
• Diethylene glycol
• Water-glycol mixtures

Advantages:

• Easy cleaning
• Excellent cooling characteristics
• Suitable for precision polishing applications

Important Note

Excessive dilution may cause:

• Compound fly-off
• Reduced cutting efficiency
• Poor particle retention

Oil Soluble Diamond Paste

Special low molecular weight formulation offering:

• High thermal resistance
• Excellent lubrication
• Superior covering properties
• Extended working cycle

Recommended with:

• JPT / SOLAR OS Fluid
• Aerosol lubricant systems

High-Precision Diamond Suspension System

JPT Diamond Slurry is an advanced agglomerate-free suspension of diamond micron particles developed for critical polishing and flat lapping applications.

The slurry maintains:

• Uniform particle dispersion
• Long-term suspension stability
• Continuous cutting action
• 100% particle utilization

Types of Diamond Slurry

Available in:

• Oil Soluble Base
• Water Soluble Base
• Universal Soluble Base

Diamond Paste available in:

• 5 gm precision syringes
• 50 gm containers

Diamond Slurry available in:

• 100 gm bottles
• 250 gm polyethylene containers

Custom concentrations and formulations available on request.

JPT Diamond Compounds are capable of achieving ultra-fine surface finishes up to:

Ra < 0.05 µm

For Conventional Abrasive Finish (250–300 Mesh)

Recommended sequence:

D50 → D20 → D10 → D3

For ultra-super finishing:

D3 → D1

For Fine Abrasive Finish (400–600 Mesh)

Recommended sequence:

D30 → D10 → D3 → D1

Hard Lap Materials

Provide:

• Faster stock removal
• Aggressive cutting action
• Coarser surface finish

Suitable for:

• Rough lapping operations

Soft Lap Materials

Provide:

• Controlled cutting
• Fine polishing action
• Superior surface finish

Suitable for:

• Pre-finishing and superfinishing operations

Roughing Operations

• Soft Iron
• Cold Rolled Steel

Medium Cutting Operations

• Copper
• Aluminium
• Hardwood

Pre-Polishing & Superfinishing

• Soft Wood
• Felt
• Surgical Cotton

Standard Concentration

Recommended for:

• Mild steel
• Hardened steel
• Chrome plated components

High Concentration

Recommended for:

• Tungsten carbide
• Ceramics
• Sapphire
• Superhard materials

Material Hardness Recommendation

For materials above:

HRC > 50

Use:

• High concentration diamond compound

For materials below:

HRC < 50

Use:

• Standard concentration compound

Tool & Die Industry

Used for:

• Carbide die polishing
• Extrusion die finishing
• Punch & die polishing
• Mold cavity superfinishing

Bearing Industry

Suitable for:

• Bearing race lapping
• Ceramic seal finishing
• Precision ring polishing

Optical Industry

Used in:

• Optical lens polishing
• Optical flat finishing
• Sapphire polishing
• Precision glass finishing

Semiconductor Industry

Applied in:

• Computer read/write heads
• Video heads
• Semiconductor component finishing
• Electronic precision parts

Watch & Jewellery Industry

Used for:

• Watch jewel finishing
• Sapphire watch glass polishing
• Gem polishing
• Precision decorative finishing

Precision Engineering Industry

Suitable for:

• Plug gauges
• Ring gauges
• Thread gauges
• Precision wear components

• Tungsten Carbide
• Ceramics
• Hardened Steel
• Sapphire
• Glass
• Cermets
• Superalloys
• PCD Materials
• Precision Tool Steels

The performance of diamond lapping compounds depends upon:

• Lap material selection
• Diamond grit concentration
• Diamond particle size
• Working pressure
• Sliding speed
• Lubrication conditions
• Surface preparation quality

Machine Speed

Recommended operating speed:

2000–4000 RPM

For:

• Flexible shaft machines
• Precision polishing systems
• High-finish operations

Excessive speed may cause:

• Surface pitting
• Burnishing defects
• Reduced polishing quality

Clean Working Environment

Essential for:

• High-quality surface finish
• Contamination-free polishing
• Consistent results

Separate Laps for Each Grade

Never interchange laps between different grit sizes to avoid:

• Cross contamination
• Deep scratches
• Surface damage

Cross-Cut Polishing Method

Successive polishing operations should:

• Cross previous polishing lines
• Improve surface uniformity
• Eliminate directional scratches

• Fast stock removal
• Superior mirror finish capability
• Scratch-free polishing
• Excellent particle consistency
• Long working life
• High polishing efficiency
• Reduced process cycle time
• Suitable for ultra-precision applications
• Stable viscosity over wide temperature range

• Manufactured using precision graded diamond powders
• Strict micron classification standards
• Excellent surface finish performance
• High concentration and standard concentration options
• Oil, water & universal soluble formulations available
• Custom formulations available for specialized applications
• Trusted in precision engineering industries

Diamond Paste Grades

• D50
• D30
• D20
• D10
• D7
• D5
• D3
• D1
• Sub-micron grades available

Product Variants

• Oil Soluble Diamond Paste
• Water Soluble Diamond Paste
• Universal Soluble Diamond Paste
• Diamond Slurry
• High Concentration Diamond Compound
• Standard Concentration Diamond Compound

Custom grit sizes, concentrations, viscosities, and packaging available as per customer application requirements.