How do I know when to replace a lapping film?

Replace your film when you see: Reduced cutting speed Visible clogging or loading Uneven polishing marks Scratches or debris trapped on the surface Worn abrasive coating Consistent replacement ensures uniform performance.

Can I order custom-sized lapping films?

Yes. XYT offers custom: Sheet sizes (any dimension) Disc diameters Roll width and length Micron sizes and abrasive types Private label packaging

How long does lapping film last?

Film lifetime varies by: Abrasive type Pressure and polishing speed Workpiece material Coolant or lubrication Diamond films typically last longest, followed by ALO and SiC. Final polishing films (CE, SiO₂) may last several cycles depending on workload.

Do lapping films produce consistent results?

Yes—precision films are engineered with: Uniform abrasive particle size Controlled coating thickness Even distribution across the entire surface This ensures predictable performance and repeatable surface finish.

Can lapping film be used for manual polishing?

Yes. Lapping film works with both manual polishing blocks and automatic polishing machines. For manual use, films with more flexible backing (3 mil or 5 mil PET) are preferred to maintain consistent pressure.

Lapping Film

+86 15602996835

sales@xytbrands.com

Lapping Film

PRODUCTS



Location: Home > Lapping Film > XYT Lapping Film Technical Guide

XYT Lapping Film Technical Guide

☑ Lapping Film

Product Details

XYT Lapping Film Technical Guide

Micron-to-Mesh Charts, Grit Sequences, and Application Notes for Process Engineers

Purpose: This guide is designed for process engineers, quality engineers, and technical specialists to select the correct lapping film for optical, fiber-optic, automotive, metal, and industrial applications. It provides micron-based grit selection, approximate mesh reference, and process guidance for reliable, high-precision surface finishes.

1. Standard Diamond Lapping Film Grit Sizes (Micron-Based)

Micron (µm)	Function
80–60	Heavy stock removal, flattening
45–30	Coarse lapping, shape correction
15	Pre-polishing
9	Intermediate polishing
6	Fine polishing
3	Pre-final finishing
1	Final polishing
0.5	Ultra-fine / mirror finish

2. Micron-to-Mesh Reference Chart

Note: Mesh sizing is approximate. Use microns as the primary reference for diamond lapping films.

Mesh	Approx. µm	Application Reference
60	~250	Heavy grinding
80	~180	Rough shaping
120	~125	Coarse grinding
180	~80	Stock removal
240	~60	Coarse lapping
320	~45	Pre-lapping
400	~38	Fine lapping
600	~25	Pre-polishing
800	~20	Light polishing
1000	~15	Pre-finish
1200	~12	Fine polishing
1500	~9	Intermediate polishing
2000	~6	Fine polishing
2500	~3	Pre-final finish
4000	~1	Ultra-fine polishing
8000	~0.5	Mirror finish

Technical Note: Micron grading provides tight particle distribution, predictable scratch control, and repeatable polishing performance, which mesh sizing cannot guarantee.

3. Recommended Grit Sequences by Material/Application

3.1 Optical Components (Glass, Sapphire, Quartz)

Stage	Grit (µm)	Notes
Initial lapping	30	Flatten surfaces, remove major defects
Intermediate	15 → 9	Reduce scratches from previous step
Fine polishing	6 → 3	Prepare for final finish
Final finish	1 → 0.5	Achieve optical clarity and Ra targets

3.2 Fiber Optic Connector Polishing

PC / UPC:

Step	Grit (µm)	Notes
Pre-polish	12–9	Remove end-face imperfections
Intermediate	5–3	Improve geometry, reduce insertion loss
Final polish	1	Ensure low IL and high return loss

APC / MPO / MTP®:

Step	Grit (µm)	Notes
Pre-polish	15–9	Flatten angled ferrules
Intermediate	5–3	Smooth surface, reduce scratches
Final polish	1 → 0.5	Mirror finish for high return loss

3.3 Precision Metal Components (Steel, Carbide, Tooling)

Stage	Grit (µm)	Notes
Stock removal	45 → 30	Remove major burrs and surface irregularities
Pre-finish	15 → 9	Reduce scratches for final polish
Fine finish	6 → 3	Improve surface flatness and smoothness
Super finish	1	Achieve low friction, high wear resistance

3.4 Ceramics & Advanced Hard Materials

Stage	Grit (µm)	Notes
Coarse lapping	60 → 30	Rapid material removal on brittle surfaces
Intermediate	15 → 9	Smooth surface, minimize chipping
Fine polishing	6 → 3	Prepare for final ultra-fine finish
Final	1 → 0.5	Mirror or optical finish

4. Process & Application Notes

Do not skip grit steps — skipping can leave deep scratches
Pressure control — reduce pressure as grit becomes finer
Pad cleaning — always clean between grit changes to avoid contamination
Process monitoring — measure Ra and surface geometry at critical steps
Film handling — avoid bending or contamination; maintain flat contact

5. XYT – Precision Lapping Film Solutions

XYT delivers engineered, high-performance lapping films for optical, fiber-optic, automotive, and industrial applications. Using advanced abrasive technology, uniform coatings, and dimensionally stable backings, XYT ensures:

Controlled material removal
Micron-level surface finish consistency
Extended consumable life
Optimized process efficiency

With 30+ years of technical expertise, XYT supports both standard and customized grit solutions, enabling repeatable, high-precision surface finishing in demanding production environments.

Online Consultation

Related Suggestion