What is the lead time for delivery?

Items in stock can be delivered in 2-3 days. For large quantities, the lead time is 15-30 days after receiving payment.

Are these honing stones compatible with Sunnen machines?

Yes, our honing stones and mandrels are compatible with brands such as Sunnen, Nagle, Gehring, Vissers, Chishima, and J&S.

What is the warranty period for these tools?

The standard warranty period for these honing stones is 3 months.

Diamond & CBN Sunnen G25 Honing Stone Abrasive Tool Polishing Bar

Name: Diamond & CBN Sunnen G25 Honing Stone Abrasive Tool Polishing Bar
Brand: Zhengzhou Hongtuo Precision Tools Co., Ltd.
SKU: 2031455082

Henan, ChinaZhengzhou Hongtuo Precision Tools Co., Ltd.

US$180.00

1-5 Sets

US$160.00

6+ Sets

Sample price:US$160.00/set.Request sample

Product profile

Customization

Available

Type

Sharpening Stones

Material

Diamond & CBN

Model NO.

G25-DM55

Application

Cylinder,Valve,Bearing,Pump,Gear,Connecting Rod

Effect

Polishing

Usage

Inner Bore Honing

Warranty

3 Months

Feature

Long Life High Performance

Customized Support

OEM, ODM

Certification

ISO 9001

MOQ

1PCS

Grit Size

Customized

Packing

Plastic Bag & Carton Box

Bond

Metal

Transport Package

Plastic Bag & Carton Box

Specification

Customized

Trademark

Origin

Henan, China

Key features

Diamond & CBN Material: High-performance super abrasive tools made from premium Diamond and CBN materials for superior polishing.

Wide Application Range: Suitable for cylinder, valve, bearing, pump, gear, and connecting rod polishing in various industries.

Custom Grit Sizes: Available in customized grit sizes from rough to finish to meet specific surface finish requirements.

OEM & ODM Support: Full OEM and ODM customization support including logo printing and specific design requirements.

Fast Delivery: 2-3 days for in-stock items and 15-30 days for large quantities after payment confirmation.

ISO 9001 Certified: Manufactured under strict ISO 9001 quality management standards ensuring consistent product quality.

High Precision Polishing: Achieves fine surface finish with Ra as low as 0.1 micrometers for high-precision components.

Professional Manufacturer: Over 20 years of experience in producing honing tools and superabrasive grinding wheels.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export Experience

Zhengzhou Hongtuo Precision Tools Co., Ltd.

Henan, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Flexible customization CertifiedExport Year: 10 Years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤4.87h

AI-Powered supplier vetting

SummaryThe supplier is a combined limited company with 296 employees and capabilities spanning lathe, CNC processing, cutting, pressing, and sintering. It reports ISO 9001:2000 certification obtained in 2006, high-tech enterprise and high-tech product certifications, quality assurance procedures, and documented complaint and corrective-action processes. Product development is supported by new products in the past year, ODM services, OEM services for well-known brands, and flexible customization, but no SDK is available. Manufacturing capacity is supported by inventory capability and multiple facilities, although there is no valid manufacturing-capacity contract with related subcontractors. International service coverage is limited: no overseas agents, branches, warehouse, showroom, or listed overseas service countries. The supplier has participated in CIMES and reports established export experience, while customer-specific case details are limited.

Supplier typeThe supplier is identified as a combined company and a limited company, with no larger-company-group affiliation reported. Its stated product scope includes honing tools and grinding wheels, and it employs 296 people.

CertificationsThe company reports ISO 9001:2000 certification obtained in 2006, along with high-tech enterprise and high-tech product certifications from the Henan Provincial Department of Science and Technology. It also reports quality assurance in quality-control processes.

After-Sales capabilityThe supplier has documented and followed procedures for corrective and preventive actions, customer complaints, and service-capability assessment, and it offers inventory capability and multiple quotation and payment options. However, it reports no overseas warehouse, showroom, agents, or branches, so overseas after-sales coverage is limited.

R&D capabilityThe supplier reports new products during the past year, provides ODM services, and has OEM capability for well-known brands. Its reported high-tech enterprise and product certifications support technical orientation, but no SDK is available.

Production capacityProduction resources include lathe, CNC processing, cutting, pressing, and sintering facilities, with finished-product inspection instructions that are uniformly followed. The supplier reports inventory capability, 20 qualified service-capability suppliers, and lead times of one month in peak season and within 15 working days off-season; however, it lacks a valid manufacturing-capacity contract with related subcontractors.

Customization capabilityThe supplier explicitly reports flexible customization and provides ODM and OEM services, including OEM services for well-known brands. These statements directly support its ability to develop or adapt products for customer requirements.

Client casesThe supplier reports OEM service for well-known brands, products used in automotive, motorcycle-engine, aircraft, hydraulic-cylinder, sewing-machine-accessory, bearing, and semiconductor microelectronics industries, and participation in the CIMES offline trade show. Specific customer names, project details, or verifiable case studies are not provided.

Product Q&A

Q:Are you a manufacturer or trading company?

Yes, we are a professional manufacturer with more than 20 years of production experience in honing tools and superabrasive grinding wheels.

Q:Where is your factory located?

Our factory is located at No.135, Longfeinan Street, International Logistics Park, Economic Development Zone, Zhengzhou, Henan, China.

Q:Can you print our logo on the products?

Yes, OEM and ODM are supported. We can customize the logo according to your requirements, and we also have our own brand available.

Q:How do I place an order?

Please provide the honing machine model (horizontal or vertical), bore type, bore length, start/finish diameters, workpiece material, hardness, stock removal amount, and required surface finish Ra.

Q:What payment methods do you accept?

We issue a Proforma Invoice (PI) and accept payments via Letter of Credit (L/C), Telegraphic Transfer (T/T), Western Union, and PayPal.