MFR Series Solid Carbide Micro Face Grooving Bars for Small Bore CNC Turning
Consistent Quality
Consistent geometry across repeat orders.
Flexible Orders
Small batches and mixed sizes available.
OEM Support
Custom marking, labels and packaging.
Standard & Custom
Standard sizes and custom configurations.
MFR Solid Carbide Micro Face Grooving Bar Overview
The MFR Series is designed for precision face grooving inside small bores on CNC lathes and Swiss-type turning machines. Its integral solid carbide construction and compact cutting profile provide the rigidity, access and dimensional control required for restricted internal machining.
Standard models cover multiple shank diameters, groove widths, working lengths and minimum bore sizes. Custom dimensions, coatings, laser marking and private-label packaging are also available according to drawings and application requirements.
Small-Bore Face Grooving Applications
Key Product Features
MFR & MKR Application Range
Select the tool geometry according to the groove position, bore restriction, required profile and machining direction. The MFR family is intended for micro face grooving, while related MKR configurations extend the available internal grooving range.
Processing Advantages
Processing Advantages
Product Detail Display
View the cutting profile, precision-ground surfaces, carbide body and finished tool details. Actual color and cutting-edge appearance may vary according to coating and application specifications.
Product Video
Watch the MFR micro face grooving bar product and machining video for a closer view of the tool geometry and application.
Tool Nomenclature & Selection Guide
Select the suitable MFR solid carbide micro face grooving bar according to shank diameter, groove width, working length, groove depth and minimum bore diameter.
| Code | Description | Example |
|---|---|---|
| MFR | Micro Face Grooving Bar | MFR Series |
| 4 / 5 / 6 / 8 | Shank Diameter D | Ø4 / Ø5 / Ø6 / Ø8 mm |
| B0.5–B3.0 | Groove Width B | 0.5–3.0 mm |
| L15–L30 | Working Length L1 | 15–30 mm |
Model Identification
Use the model breakdown below to identify the tool family and dimensional code. Send the complete model number and required quantity for faster quotation and repeat ordering.
Standard Dimensional Range
MFR & MKR Size Chart
MFR Standard Models & Dimensions
All dimensions are in millimeters. Confirm the groove width, required groove depth, minimum bore diameter and tool clearance against the component drawing before ordering.
| Shank D | Model | Overall L | Working L1 | Groove Depth T | Min. Bore Dia. |
|---|---|---|---|---|---|
| 4 | MFR 4 B0.75 L15 | 50 | 15 | 1.2 | 5 |
| 4 | MFR 4 B1.0 L15 | 50 | 15 | 1.5 | 5 |
| 4 | MFR 4 B1.5 L15 | 50 | 15 | 2.8 | 5 |
| 5 | MFR 5 B0.75 L22 | 50 | 22 | 1.2 | 6 |
| 5 | MFR 5 B1.0 L22 | 50 | 22 | 1.5 | 6 |
| 5 | MFR 5 B1.5 L22 | 50 | 22 | 1.5 | 6 |
| 5 | MFR 5 B2.0 L22 | 50 | 22 | 3.8 | 6 |
| 6 | MFR 6 B0.5 L20 | 50 | 20 | 1.0 | 8 |
| 6 | MFR 6 B1.0 L22 | 50 | 22 | 1.5 | 8 |
| 6 | MFR 6 B1.5 L22 | 50 | 22 | 2.5 | 8 |
| 6 | MFR 6 B2.0 L22 | 50 | 22 | 3.0 | 8 |
| 6 | MFR 6 B2.5 L22 | 50 | 22 | 4.6 | 8 |
| 6 | MFR 6 B3.0 L22 | 50 | 22 | 6.0 | 8 |
| 6 | MFR 6 B3.0 L30 | 50 | 30 | 6.0 | 8 |
| 8 | MFR 8 B1.0 L25 | 60 | 25 | 3.5 | 10 |
| 8 | MFR 8 B1.5 L25 | 60 | 25 | 3.5 | 10 |
| 8 | MFR 8 B2.0 L25 | 60 | 25 | 3.5 | 10 |
| 8 | MFR 8 B2.5 L22 | 60 | 22 | 3.5 | 10 |
| 8 | MFR 8 B3.0 L30 | 60 | 30 | 3.5 | 10 |
Selection Notes
Minimum Bore: The component bore must meet or exceed the listed minimum bore diameter and provide sufficient tool clearance.
Groove Width: The B value in the model code identifies the nominal groove width.
Groove Depth: Do not exceed the listed T value without confirming a custom geometry.
Tool Reach: Use the shortest suitable working length to improve rigidity and reduce vibration.
Related Micro Face Grooving Series
Left-Hand Face Grooving: MFL Series
Deep Face Grooving: MVR Series
Radius Face Grooving: MZR / MZL Series
Custom Face Grooving: MFR-C Series
We support distributors, tooling suppliers and industrial partners with flexible OEM and private label solutions for micro internal tooling products. From laser marking and customized packaging to product identification and technical documentation, we help customers build their own tooling product lines with reliable manufacturing support.
OEM Product Scope
We provide OEM and private label manufacturing solutions for micro internal tooling products, supporting distributors and tooling suppliers with standard series, customized specifications and drawing-based production.
MPR series and customized small-diameter boring tools for precision internal machining and anti-vibration applications.
MIR/MIL series with customized thread profiles, dimensions and product identification requirements.
Internal grooving and special groove solutions for miniature precision components.
Non-standard dimensions, special geometries and customer drawing-based tooling solutions are available.
Customization Options
Laser Marking & Product Identification
Custom logo, model number and product identification marking can be provided according to distributor and brand requirements.
Custom Packaging
Individual packaging, labels and product information can be customized to support reseller sales channels and private brand development.
Technical Documents & Product Support
Support technical drawings, specifications and product information to help distributors promote and manage their tooling products.
OEM Workflow
Confirm drawings, specifications, materials and packaging requirements.
Finalize tool design, marking details and production requirements.
Provide samples for testing and approval before batch production.
Produce and inspect according to confirmed requirements.
Private Label Support for Distributors
For distributors and tooling resellers, we provide flexible private label support including customized marking, packaging solutions and product documentation to help establish a professional tooling product range.
We follow strict quality control procedures from raw material inspection to final shipment. Each tool is inspected to ensure consistent dimensions, cutting performance and reliable quality for industrial machining applications.
Quality Control Process
Verify carbide material quality and consistency before production.
Control tool geometry, dimensions and cutting edge accuracy during manufacturing.
Inspect edge quality and surface finish to maintain stable cutting performance.
Confirm product specifications before packing and shipment.
Inspection Standards
| Inspection Item | Purpose |
|---|---|
| Material Inspection | Verify carbide quality and material consistency. |
| Dimension Inspection | Confirm tool size and tolerance requirements. |
| Cutting Edge Inspection | Check edge geometry and surface quality. |
| Final Inspection | Ensure products meet confirmed specifications before delivery. |
Packing & Protection
Individual protection and export packaging help prevent tool damage during storage and international transportation.
- Individual tool protection
- Product identification labels
- Batch traceability support
- Export shipment protection
Production & Delivery Workflow
Order Confirmation
Production Scheduling
Quality Inspection
Packing
Shipment
Delivery Support
Standard products can usually be shipped within 1–3 working days after order confirmation. Customized products require confirmation according to tool design, quantity and production requirements.
FAQ & Downloads
Product FAQs
What is the MFR Series micro face grooving bar used for?
The MFR Series is designed for precision face grooving on internal end faces and recessed features inside small bores. It is suitable for CNC lathes, turning centers and Swiss-type machines where compact tool access and repeatable groove dimensions are required.
What standard shank diameters and groove widths are available?
Standard shank diameters are Ø4, Ø5, Ø6 and Ø8 mm. Available groove widths range from 0.5 to 3.0 mm, depending on the shank diameter, working length and required groove depth.
What minimum bore diameters can the MFR Series machine?
The minimum bore diameter depends on the shank size. Standard Ø4 mm tools require a minimum Ø5 mm bore, Ø5 mm tools require Ø6 mm, Ø6 mm tools require Ø8 mm, and Ø8 mm tools require Ø10 mm.
What do B, L1 and T mean in the model code?
B identifies the nominal groove width, L1 identifies the working length, and T indicates the standard groove depth. For example, MFR 6 B2.0 L22 has a Ø6 mm shank, 2.0 mm groove width, 22 mm working length and 3.0 mm groove depth.
What is the maximum standard groove depth?
Standard groove depths range from 1.0 to 6.0 mm. MFR 6 B3.0 L22 and MFR 6 B3.0 L30 provide the maximum listed groove depth of 6.0 mm. A custom tool should be evaluated if a deeper groove is required.
Which workpiece materials can be machined?
The solid carbide tool can be configured for steel, stainless steel, alloy steel, cast iron and selected non-ferrous materials. Cutting geometry, coating and machining parameters should be selected according to the workpiece material and hardness.
Selection & Application FAQs
How do I select the correct MFR model?
Confirm the minimum bore diameter first, then select the groove width B, required groove depth T, working length L1 and compatible shank diameter D. Tool orientation, spindle direction and holder clearance should also be checked before ordering.
How can machining stability be improved?
Use the shortest working length that can reach the groove, minimize tool overhang, check tool-center height and runout, and use a rigid tool holder. Cutting speed, feed and depth should be adjusted according to the material and machine rigidity.
Is coolant recommended for small-bore face grooving?
Coolant or a suitable cutting fluid is recommended to control cutting heat and assist chip evacuation. Direct the coolant toward the cutting zone whenever the bore and machine setup allow it.
Ordering & OEM FAQs
Can you manufacture custom MFR micro face grooving bars?
Yes. Custom groove width, groove depth, working length, shank diameter, cutting profile, coating and laser marking can be produced according to component drawings, tool drawings or approved samples.
What information is required for a quotation?
Please provide the standard model number or component drawing, minimum bore diameter, groove width and depth, groove position, workpiece material and hardness, machine type, required quantity, and any coating, marking or packaging requirements.
What is the minimum order quantity?
The standard minimum order quantity is 10 pieces. Mixed-model trial orders and customized quantities can be reviewed according to the selected specifications and production requirements.
What is the lead time for standard and customized tools?
In-stock standard models can normally be dispatched within 1–3 working days after order confirmation. Customized tools require lead-time confirmation according to geometry, quantity, coating, sample approval and packaging requirements.
Technical Resources
Need Sizes, Pricing or Custom Options?
Send us the required tool type, sizes, quantities, workpiece material and any OEM or custom requirements. We will confirm suitable specifications, availability, lead time and quotation details.
Drawings, size lists and reference photos are welcome.
