What payment terms do you accept?

We accept T/T, LC, D/P, PayPal, Western Union, and small-amount payments.

Is the product ISO certified?

Yes, the product comes with ISO certification.

What are the main applications for this roller?

It is used for crossed roller linear guides, cylindrical roller type linear rails, heavy-load linear rails, CNC rails, and linear motors.

4.0*3.90 Precision Needle Roller for Grinding Machine Linear Guides

Name: 4.0*3.90 Precision Needle Roller for Grinding Machine Linear Guides
Brand: Changzhou Suma Precision Machinery Co., Ltd.
SKU: 1964211855

Jiangsu, ChinaChangzhou Suma Precision Machinery Co., Ltd.

US$0.001-0.01

1 Piece

Product profile

Customization

Available

Customized

Certification

ISO

Model NO.

4.0*3.90

Standard Parts

Yes

Universal

Yes

Type

Bearing Roller

Material

Chrome Steel

Transport Package

Industry Package

Specification

4.0*3.90

Trademark

SUMA or OEM

Origin

Changzhou

HS Code

8482910000

Production Capacity

1000000PCS/Month

Key features

High Precision Tolerances: Out Diameter Tolerance 0.001mm, Length Tolerance +0/-0.02mm, Roundness 0.0005mm.

Superior Hardness: Hardness HRC60-65 ensures durability for heavy-load applications.

Versatile Material Options: Available in GCR15, SUJ2, and AISI52001 chrome steel.

OEM and ODM Services: Full customization available from designs or samples.

ISO Certified Quality: Manufactured with ISO certification and rigorous random inspection.

Fast Lead Time: Peak and off-peak season lead time within 15 workdays.

Low MOQ: Minimum Order Quantity starts from 1 piece.

Multiple Payment Terms: Supports T/T, LC, D/P, PayPal, Western Union, and small-amount payments.

Company profile

High Repeat Buyers ChoiceYears of Export ExperienceExhibition ExperienceQuality Assurance

Changzhou Suma Precision Machinery Co., Ltd.

Jiangsu, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 11 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤2.97h

AI-Powered supplier vetting

SummaryChangzhou Suma Precision Machinery Co., Ltd. is a China-based limited company established in 2012, with 23 employees and operations in manufacturing-related machinery. It supplies bearings, clutches, backstop clutches, and washers, and reports machining, CNC grinding, and CNC turning equipment. The supplier demonstrates broad customization, recent new-product activity, ODM capability, and OEM service for recognized brands. Quality controls include product inspection instructions, raw-material traceability, and maintained procedures. Export experience is substantial, with 90% of sales reported as exports and 11 years of exporting, but no overseas warehouses, showrooms, agents, or branches. Service governance is weakly documented: no written procedures or records were reported for supplier assessment, corrective actions, or complaint handling. The provided slices do not establish certifications, detailed financial strength, or named customer cases. An audit by CTI is recorded, but the evaluation result is...

After-Sales capabilityThe supplier accepts multiple quotation and payment terms and reports average peak- and off-season lead times within 15 working days. However, it has no written procedures or records for complaint handling or corrective and preventive actions, and it has no overseas warehouse, showroom, agent, or branch; these facts indicate limited documented after-sales infrastructure.

R&D capabilityThe supplier reports that it had new products during the past year and provides ODM services, supporting active product-development capability. It also offers customization from designs and samples, but has no available SDK, so the innovation evidence is positive but not comprehensive.

Production capacityReported production resources include a machining center, CNC grinding machine, and CNC lathe. Finished products are inspected using instructions that are uniformly followed, with quality assurance, raw-material traceability, and maintained quality-control records; however, the slices do not quantify capacity or output.

Customization capabilityThe supplier explicitly provides minor customization, full customization, customization from customer designs, and customization from samples. The same capabilities are reported in both the R&D and design-service information, providing direct evidence of broad customization coverage.