220V LD100 Valve Grinding Machine - Precision Valve Grinder for Automotive Repair, Small Batch Processing

TECHTONGDA^®

	ITEM DESCRIPTION
	Wide Compatibility: Perfectly reface valves for cars, motorcycles, trucks, agricultural machinery, and industrial generators.
	Precision Engineering: Achieve accurate valve seat angles and a perfect seal for optimal engine performance and compression.
	Ideal for Shops & Hobbyists: Effortlessly handle both single valve jobs and small production runs with consistent, reliable results.
	Robust Construction: Built with durable materials to withstand the demands of a professional workshop.
	User-Friendly Operation: Designed for simplicity without sacrificing precision, reducing operation time and labor costs.

The LD100 Valve Grinding Machine is a versatile and robust solution for precision valve refurbishment across a wide range of engines. Ideal for automotive repair shops, motorcycle mechanics, and agricultural machinery maintenance, it expertly handles everything from passenger cars and trucks to tractors and large generator sets.
Engineered for reliability in both one-off repairs and small-batch operations, the LD100 ensures consistent, professional-grade results. Its user-friendly design features making complex valve resurfacing tasks straightforward and efficient.
Whether you're a professional technician seeking to enhance your workshop's capabilities or an experienced DIY enthusiast tackling engine overhauls, the LD100 is built to deliver the accuracy and durability you demand.

ITEM PARAMETERS

Model:	LD-100B
Voltage:	AC220V/50-60Hz
Phase number:	1
Valve Stem Diameter:	0.14"-0.79"(3.5mm-20mm)
Valve Head Diameter:	0.47"-3.94"(12mm-100mm)
Valve Length:	2.76"-17.7"(70mm-450mm)
Grinding Angle Range:	10°-57°
Main Grinding Wheel Diameter:	7.87"(200mm)
Dish Wheel Diameter:	3.94"(100mm)
Main Grinding Wheel Width:	0.59"(15mm)
Spindle Motor Power:	1HP(750W)
Grinding Wheel Travel:	3.54"(90mm)
Valve Drive Motor Power:	180W
Coolant Motor Power:	100W
Valve Feed Stroke:	3.54"(90mm)
Air Supply Pressure:	0.6MPa(6bar)
Coolant Tank Capacity:	1.06usgal(4L)
Valve Drive Motor Speed:	120-750rpm
Grinding Wheel Speed:	3600RPM
Package size:	41.3"37.0"48.8"(106CM94CM124CM)
Net weight/Gross weight:	593.0LBS(269KG)/696.7LBS(316KG)

ITEM PRECAUTIONS

Warning: Always prioritize safety and proper operation to prevent personal injury and damage to the equipment.

1. Safety First

(1) Eye Protection is Mandatory: Always wear certified safety goggles or a face shield during operation. Grinding produces high-speed particles that can cause serious eye injury.

(2) Secure Loose Items: Do not wear gloves, ties, loose clothing, or jewelry that could become entangled in the moving parts of the machine.

(3) Hand Safety: Keep hands away from the grinding wheel while the machine is in operation. Always ensure the wheel has completely stopped before making adjustments or changing parts.

(4) Work in a Well-Ventilated Area: The grinding process may generate fine dust. It is advisable to use the machine with adequate ventilation or a dust extraction system.

2. Installation & Setup

(1) Power Supply Verification: Before connecting to power, ensure your local voltage and frequency match the machine's requirements. Using an incorrect power supply will damage the motor.

(2) Secure Mounting: Mount the machine on a sturdy, stable, and level workbench to prevent vibration and movement during operation.

(3) Air Supply Requirements: If the machine is equipped with pneumatic components, ensure your air compressor provides clean, dry air at the correct pressure (0.6 MPa) as specified in the manual.

3. Operation & Usage

(1) Inspect Before Use: Always inspect the grinding wheel for cracks or damage before installation. Never use a damaged or cracked wheel., as it can break apart at high speed.

(2) Proper Wheel Dressing: Regularly dress the grinding wheel using the diamond dresser to maintain its cutting efficiency and prevent glazing. A poorly dressed wheel can cause overheating and damage the valve surface.

(3) Correct Workpiece Clamping: Always ensure the valve is securely and correctly clamped in the drive mechanism before starting the grinding process. A loose valve can be thrown from the machine.

(4) Avoid Overloading: Do not force the valve into the grinding wheel with excessive pressure. Allow the grinder to remove material at its own pace. Overloading can stall the motor, damage the wheel, and produce poor surface finishes.

(5) Use Coolant: Always use the recommended coolant during grinding. This prevents the valve from overheating (which can anneal and weaken the steel), improves surface finish, and extends the life of the grinding wheel.

4. Maintenance & Servicing

(1) Power Disconnection: Always disconnect the machine from the power source before performing any maintenance, cleaning, or wheel changes.

(2) Regular Cleaning: Keep the machine clean. Wipe down surfaces after use and regularly clean the coolant tank to prevent chip buildup and corrosion.

(3) Lubrication: Periodically lubricate all moving parts (e.g., guide rails, screws) as instructed in the manual to ensure smooth operation and accuracy.

(4) Professional Repair: This machine contains precision components. Do not attempt to disassemble or repair the main motor or spindle yourself. Contact a qualified technician for service.

ITEM DETAILS


Well-Designed & Intuitive Control The control panel boasts a logical layout with clearly grouped functions. All switches (Drive, Grinding Wheel, Oil Pump, Main Power) and indicator lights are centralized for one-touch operation. The easily accessible emergency stop switch ensures safety, while the dedicated cylinder clamp switch and variable speed control knob work in tandem to enable efficient valve clamping and precise speed adjustment, significantly boosting productivity.	Automated Centralized Lubrication This system features an efficient centralized lubrication unit that automatically delivers oil from a main pump to four critical friction points. This ensures core moving parts like guide rails and lead screws are always optimally lubricated to minimize wear. It eliminates the need for tedious manual greasing, significantly extends the machine's service life, and guarantees consistent machining accuracy and reliability.	Flexible & Efficient Directed Cooling The machine is equipped with an independent coolant pump and a magnetic-base, multi-directional spray pipe. This allows for 360-degree positioning to precisely direct coolant flow to the exact point of contact between the wheel and workpiece. This targeted design effectively prevents workpiece overheating (annealing), eliminates wheel clogging, significantly improves surface finish quality, and extends the grinding wheel's service life.

Versatile & Precision Grinding Station This integrated station combines a dish-type grinding wheel, a precision graduated handwheel, and dedicated fixtures for a complete grinding solution. The dish wheel is designed for efficient valve face grinding. The high-precision handwheel allows for micron-level(20um) feed control to accurately manage material removal. Exclusive fixtures enable quick switching between valve tip grinding and chamfering without changing modules, significantly boosting precision and operational efficiency.	Rigid Precision Guidance System The machine features two long, hardened and ground slide rails that form a highly rigid foundation. The two independent workpiece clamping cylinders mounted on them offer a long stroke and smooth operation, effectively suppressing machining vibrations. This dual-rail design ensures exceptional stability of the moving parts under heavy grinding loads, providing a solid guarantee for high-precision machining.	High-Precision Diamond Dressing Tool The machine includes a professional diamond dresser that quickly and accurately restores the grinding wheel's profile and cutting sharpness. This key accessory prevents workpiece burns and inaccuracies caused by a dull wheel, guaranteeing the valve grinding ring always achieves the optimal geometry and surface finish. It is essential for maintaining consistent, high-quality results over the long term.


High-Precision Valve Tip Cone Grinding The machine features a dedicated valve tip cone grinding setup, utilizing a precision adjustment handwheel to control grinding depth. Combined with the rigid dual slide rails and workpiece clamping cylinders, it ensures vibration-free operation during regrinding. This function quickly restores the standard geometry and sealing performance of the valve tip cone, enhancing engine valve sealing efficiency and preventing power loss caused by wear.	Ergonomic & Precision Feed Design The grinding wheel feed handle features an ergonomic shape for comfortable grip and low-effort operation. Driven by a precision gear or lead screw mechanism, it enables smooth, micron-level fine feed of the wheel, effectively preventing impact or over-grinding during operation. This allows the operator to accurately control the grinding amount by hand, ensuring consistent processing results and a superior surface finish on valve faces.	Wide-Range Precision Angle Adjustment Features a calibrated scale with a wide 10°-57° adjustment range, covering the valve angle specifications for the vast majority of global engine models. The precise graduations and a secure locking mechanism enable fast, accurate angle setting and repeatable positioning, eliminating the need for repeated calibration. This design significantly improves efficiency when switching between different valve types and ensures every valve is ground to the exact required face angle, guaranteeing optimal engine sealing performance.

ITEM OPERATING INSTRUCTIONS

1. Adjusting the Machine's Grinding Angle:

◆After determining the valve's angle, loosen the machine's angle lock handle.

◆Then, adjust the scale to match the valve's angle.

2. Adjusting the Valve Positioning Device:

◆Select the drive rubber block according to the diameter of the valve head.

◆Install the block into the drive holder.

◆Turn on the V-block cylinder switch.

◆Adjust the moving bracket cartridge and cylinder top post based on the valve stem's length.

◆Adjust the drive center handwheel to align the drive rubber block coaxially with the valve.

◆Turn off the cylinder switch. The valve is now securely installed.

3. Grinding the Valve Working Ring:

◆Left hand: Hold the table travel handwheel and rotate it to move the table.

◆Right hand: Hold the grinding wheel feed handle and move it leftward to bring the wheel within 2-3 mm of the valve's working surface.

◆Start the grinding wheel, drive mechanism, and oil pump switches.

◆Use both hands to make fine adjustments until the valve gently contacts the grinding wheel to begin grinding.

◆Continue until the entire grinding ring becomes bright and polished.

◆Left hand: Rotate the handwheel counterclockwise 360 degrees for a final pass.

◆Right hand: Move the grinding wheel rightward until it triggers the limit switch and stops.

◆Press the cylinder switch to release and remove the valve.

◆Repeat the above steps to process the next valve.

4. Grinding the Valve Tip:

◆First, move the grinding wheel closest to the limit switch. Ensure the wheel remains spinning when the switch is engaged.

◆Tighten the grinding wheel platform limit lock bolt to secure its position.

◆Secure the valve in the V-groove of the double V-block fixture.

◆Start the grinding wheel motor.

◆Adjust the scale adjustment handwheel to begin grinding the valve tip.

5. Chamfering the Valve Tip:

◆Slide the valve stem fixing sleeve onto the valve stem and adjust it to the correct position.

◆Then, secure the valve into the V-groove fixing bracket.

◆Adjust the distance between the bracket and the grinding wheel.

◆Start the grinding wheel.

◆Right hand: Rotate the valve steadily.

◆Left hand: Adjust the scale handwheel to control the feed for chamfering.

ITEM INCLUDED(057218)

Valve Grinding Machine*1

Accessory Kit *1

You can make order with no worry.
Any concern just feel free to let us know, we'll reply in 24 hours in normal condition.
Handling Time: Shipping is usually made in 1-3 business days after payments cleared. Orders are processed from Monday-Friday; Not on the weekends & public holidays.
Warranty: 6 months' warranty for the machines, not for the consumables.
We stand behind our products all the item, so even if your warranty period has expired, you can still seek for service or technical support from us with low cost.

SHIPPING & HANDING DETAILS

Default Shipping Cost or Free Shipping Information:
▲ Default shipping cost or free shipping service is only for the customers from Canada or the lower 48 United States by Canada Post, USPS or the UPS Ground. Customers from other areas or needs other shipping ways, please contact us.
▲ Buyers from Guam, Puerto Rico,Virgin Islands, American Samoa, Alaska, Hawaii, PO Boxes, APO/FPO addresses or other countries/areas, there WILL be extra shipping costs, please contact us for more detailed information.
▲ Please make sure your address is valid for both UPS and USPS services. Any costs incurred because of incorrect or undeliverable address should be undertaken by buyer.

Handling Time: Shipping is usually made in 1-3 business days after payments cleared. Orders are processed from Monday-Friday; Not on the weekends & public holidays.

Sales tax / Customs duties: Any sales taxes or Customs duties are not included. If came out, they must be undertaken by the buyer.

Damage In Shipping: Email or call us First! We will work with you to get the case resolved in the fastest method.

RETURN & REFUND

If you are not 100% happy with your purchase, please contact Us. Please don't directly opened a request or case without informing us, or else, we will do some discounts on the warranty and other sales-services later on. Hope for your understanding.

Returns & Exchanges

▲ All returns must be made within 14 days of delivery date. Items must be in new, unused condition, with all original materials included with the shipment. A partial refund may be applied for opened or damaged items, depending on the condition.
▲ Items returned under the buyer’s remorse: The return shipping fee must be covered by the buyer; The original shipping cost will also be deducted from the refund. 15% restocking fee of the items purchase price will be charged.
▲ Returns that are the result of our seller's error: Buyer will receive a full refund of the item as well as shipping charges
▲ All returns require a RA (Return Authorization) number that will be given by our seller. Please contact with us at first for more details.

Defective & Damaged Products

▲ If product was received damaged or not as described, please send us some pictures or videos, so we could well understand your problem, then solve them for you ASAP. Besides, it's much helpful for us to claim with UPS, remind our related department to pay much more attention to packaging later on. Hope for your understanding.
▲ Replacement or refund of defective or damaged products can only be returned in exchange for the exact same product, or else, the purchase price will be refunded back to your original payment method.
▲ If an item is received damaged, customer service must be contacted within 7 days of receiving your item. All returns require a RA (Return Authorization) number as above.

PAYMENT

eCheck Issues: Payments via eCheck do not clear immediately. Usually you will wait 5-7 days after checkout for it to clear. Then we will arrange shipments for you.

WARRANTY & FEEDBACK

▲ 6 months' warranty for the machines, not for the consumables. We stand behind our products all the item, so even if your warranty period has expired, you can still seek for service or technical support from us with low cost.
▲ Any warranty shipping cost to us is responsible by buyer.
▲ Any shipping cost to buyer is responsible by the seller.
▲ We committee to the customer satisfaction and want to bring you the best purchase experience. If there is any problems, please contact us ASAP. If not, please leave us a positive feedback as it's very important for us. Thanks very much.

On Oct 9, 2025 at 00:42:23 PDT, seller added the following information: