TCF-28B Extra Heavy Duty Long Arm Sewing Machine

The DAPSEW TCF-8B / TCF-28B Series is an extra heavy duty flat-bed, long-arm compound-feed lockstitch sewing machine designed for thick, multilayer and large-format sewing materials.

The machine features a synchronized compound feeding system, a large vertical rotating hook and a robust mechanical structure to support consistent material feeding and stitch formation in demanding industrial sewing applications.

Available in both single-needle and double-needle configurations, the series offers two working-space options:

L30 Series: 762 × 143 mm

L20 Series: 508 × 143 mm

With a maximum stitch length of 10 mm, DY×3 heavy-duty needle system and a large vertical hook, the machine is suitable for selected heavy leather, automotive upholstery, industrial canvas, tents and technical textile applications.

A standard clutch motor configuration is listed in the catalog. An optional electronic variable-speed motor and additional automatic functions can be supplied according to the selected configuration.

Key Features

1. Extra Heavy Duty Sewing Capability

The TCF-8B / TCF-28B Series is designed for thick materials and multilayer sewing operations that require a robust lockstitch mechanism.

The machine incorporates a reinforced mechanical structure, heavy-duty needle system and large rotating hook to accommodate demanding sewing conditions.

It is suitable for applications involving heavy leather, synthetic leather, thick canvas and other industrial materials.

2. Compound Feed for Multilayer Materials

The machine adopts a compound feeding mechanism combining needle feed, presser foot feed and feed dog movement.

These feeding components work together to move the material during sewing.

This arrangement helps minimize shifting between layers when working with thick or uneven sewing materials.

The compound feeding system is particularly useful for leather goods, upholstery and other multilayer industrial sewing applications.

3. Long Arm Design for Large Workpieces

The series offers two working-space configurations.

TCF-8B-L30 / TCF-28B-L30

762 × 143 mm working space for handling large upholstery panels, industrial fabrics and bulky workpieces.

TCF-8B-L20 / TCF-28B-L20

508 × 143 mm working space for applications requiring a shorter long-arm configuration.

The extended arm provides additional clearance for positioning and sewing large material assemblies.

4. Single and Double Needle Configurations

The series is available with different needle arrangements.

Single Needle – TCF-8B

Suitable for single-row lockstitch seams, heavy material joining and general extra-heavy-duty sewing.

Double Needle – TCF-28B

Suitable for producing two parallel rows of lockstitch seams on heavy materials.

The double-needle models have a factory-listed needle gauge of 12.7 mm.

5. Large Vertical Rotating Hook

The machine is equipped with a large vertical rotating hook designed for heavy-duty lockstitch sewing.

The large hook accommodates a larger bobbin and supports sewing with suitable heavy-duty threads.

Compared with smaller-hook configurations, the larger bobbin capacity can help reduce bobbin replacement frequency during production.

6. Hook Overload Protection

The machine features an overload disengaging mechanism for the rotating hook.

This mechanism helps protect the hook assembly when abnormal resistance or thread jamming occurs.

It is intended to reduce the risk of damage to the hook mechanism and related sewing components.

7. Stable Mechanical Transmission

The upper and lower shafts are supported by bearings and driven through synchronized timing belts.

The mechanical transmission is designed to support consistent operation during demanding sewing applications.

The machine also features a slider-bar thread take-up mechanism.

8. Maximum 10 mm Stitch Length

The machine offers a maximum stitch length of 10 mm.

The stitch length can be adjusted according to the material thickness, sewing thread and required seam construction.

9. High Presser Foot Lift

The presser foot lifting specifications are:

By hand: 20 mm

By knee: 23 mm

The high presser foot clearance helps operators position and remove thick or bulky material assemblies.

10. Optional Electronic Speed Control and Automatic Functions

The catalog specifies a 550W clutch motor configuration.

An optional 550W electronic variable-speed motor is also described.

With the appropriate additional components, the machine may be configured with:

Automatic presser foot lifting

Automatic reverse sewing

Automatic needle positioning

These functions are configuration-dependent and should be confirmed before ordering.

Model Comparison

All four models share the same general compound-feed sewing mechanism and heavy-duty construction. The main differences are the number of needles and available working space.

Technical Specifications

Typical Applications

Automotive Interiors & Upholstery

Suitable for selected heavy-duty automotive upholstery operations, including thick seat cover panels, reinforced interior components and other multilayer textile or leather assemblies.

Heavy Leather Goods

Suitable for sewing heavy leather and synthetic leather components requiring strong lockstitch seams and compound material feeding.

Tents, Canvas & Industrial Covers

The long arm provides clearance for handling large canvas panels, heavy tents, protective covers and other industrial textile products.

Safety & Protective Textile Products

The machine may be considered for selected heavy textile components, including safety belts and restraint-system fabrics.

For safety-critical or load-bearing products, compliance with the applicable standards and validated seam-strength testing are essential.

Technical Textiles

Suitable for selected extra-heavy-duty sewing applications involving large industrial fabric assemblies and demanding multilayer materials.

Frequently Asked Questions

Q1: What is the TCF-8B / TCF-28B Series mainly used for?

The series is designed for extra-heavy-duty lockstitch sewing involving heavy leather, upholstery, canvas, tents and industrial textile assemblies.

Q2: What is the difference between TCF-8B and TCF-28B?

TCF-8B is the single-needle version, while TCF-28B is the double-needle version.

Q3: What is the difference between L30 and L20?

The L30 series has a working space of 762 × 143 mm, while the L20 series has a working space of 508 × 143 mm.

Q4: Does this machine have compound feed?

Yes. The machine combines needle feed, presser foot feed and feed dog movement to support more consistent feeding of thick and multilayer materials.

Q5: What is the maximum stitch length?

The maximum listed stitch length is 10 mm.

Q6: What needle system does the machine use?

The machine uses DY×3 needles, with a catalog-listed needle size of #27.

Q7: Does it use a large rotating hook?

Yes. The machine is equipped with a large vertical rotating hook.

Q8: What is the needle gauge for double-needle models?

The factory-listed needle gauge is 12.7 mm.

Q9: What is the maximum sewing speed?

The maximum listed sewing speed is 1,200 stitches per minute.

Q10: Does the machine have automatic lubrication?

No. The supplied catalog specifies manual lubrication.

Q11: Can the machine be equipped with a servo motor?

The catalog describes an optional 550W electronic variable-speed motor.

Q12: Does the machine have automatic reverse sewing?

Automatic reverse sewing is available as a possible configuration with additional components. It is not listed as a standard function for every model.

Q13: Is the machine suitable for automotive upholstery?

Yes. It is intended for selected heavy automotive upholstery applications, including seat cushions and related thick material assemblies.

Q14: Can the machine sew safety belts or restraint-system components?

The original product information lists these among potential application areas. However, suitability for safety-critical products must be established through validated sewing trials, seam-strength testing and applicable product certification requirements.

Q15: What information should customers provide before ordering?

Customers should specify the material type, total thickness, number of layers, sewing thread, required needle arrangement, working-space requirements and preferred motor configuration.

Request a Quotation

Extra Heavy Duty Sewing Solutions for Leather, Upholstery & Technical Textiles

DAPSEW supplies industrial sewing machines for demanding sewing applications, including leather goods, automotive upholstery, heavy canvas and technical textiles.

Tell us your material, sewing operation, required working space and preferred machine configuration.

We can help confirm the appropriate model and arrange international supply.

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