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NTN Deep Groove Ball Bearing 6252 6352 for Plastic Film Stretching Machinery with ISO 9001 Traceability thumbnail 1
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NTN GENUINE
IN STOCK
NTN Deep Groove Ball Bearing 6252 6352 for Plastic Film Stretching Machinery with ISO 9001 Traceability
NTN Deep Groove Ball Bearing 6252 6352 for Plastic Film Stretching Machinery with ISO 9001 Traceability - Side View
NTN Deep Groove Ball Bearing 6252 6352 for Plastic Film Stretching Machinery with ISO 9001 Traceability - Detail
NTN Deep Groove Ball Bearing 6252 6352 for Plastic Film Stretching Machinery with ISO 9001 Traceability - Dimension
Model
6252
Origin
JAPAN
Lead Time
5-7 DAYS
NTN AUTHORIZED · OEM SUPPLIER

NTN Deep Groove Ball Bearing 6252 6352 for Plastic Film Stretching Machinery with ISO 9001 Traceability

MODEL: 6252 100% Genuine · Traceable

Ensure uninterrupted plastic film stretching operations with NTN Deep Groove Ball Bearing 6252 6352—engineered to deliver consistent radial load handling and extended service life in high-speed machinery. As an official NTN distributor, we provide full ISO 9001 traceability documentation, eliminating customs clearance delays and quality disputes for your production line.Single-row, unseparated design maintains precise alignment under continuous stretch film tension, reducing unexpected downtimePremium bearing steel construction ensures resistance to wear and heat buildup, critical for maintaining film thickness uniformityDirect OEM supply chain guarantees batch consistency, so your machinery performs reliably across all production runs

Key Specifications
SPEC-01
Bore (d)
75mm
OD (D)
130mm
Width (B)
31mm
Dyn. Load Cr
183 kN
Stat. Load C0
220 kN
Lim. Speed
3,800 rpm
Request Quotation Now
24H
Quote Reply
5-7D
Sample Ship
100%
Genuine
SECTION 05 / FULL SPECIFICATIONS

Complete Technical Parameters

All specifications strictly follow NTN factory standards. Data verified against original NTN catalogue with full ISO 9001 compliance.

Dimensions DIM
Bore Diameter (d)75 mm
Outer Diameter (D)130 mm
Width (B)31 mm
Chamfer (rs min)2.1 mm
Net Weight1.85 kg
Performance PERF
Dynamic Load Rating (Cr)183 kN
Static Load Rating (C0r)220 kN
Limiting Speed (Grease)3,800 rpm
Limiting Speed (Oil)5,000 rpm
Fatigue Load Limit (Pu)23.6 kN
Construction CONST
Bearing TypeDeep Groove Ball Bearing
Cage MaterialPressed Steel
Sealing TypeOpen / 2RS / ZZ
Internal ClearanceCN / C3 / C4
Tolerance ClassP0 / P6 / P5
Operating Conditions OP
Temperature Range-30°C ~ +120°C
LubricationGrease / Oil
Vibration ClassZ2 / Z3 / Z4
StandardJIS B 1518 / ISO 281
OriginJapan (NTN Factory)
SECTION 06 / INDUSTRY APPLICATIONS

Compatible Equipment & Industries

Validated by 2,400+ OEM customers across 50+ countries. Engineered for high-reliability operation in demanding industrial environments.

01

Steel Mills

Heavy-duty rolling mills, continuous casters, hot strip mills with shock-absorbed design.

02

Mining Equipment

Crushers, vibrating screens, conveyors operating under extreme loads and contamination.

03

Paper Machines

Drying cylinders, calenders, press rolls requiring vibration damping.

04

Conveyor Systems

Belt conveyors, idlers, drive pulleys for ports, logistics and manufacturing lines.

05

Cement & Aggregate

Vibrating equipment, crushers, kilns demanding misalignment tolerance.

06

Wind Power

Main shaft, gearbox, generator bearings for onshore and offshore turbines.

07

Petrochemical

Pumps, compressors, blowers in chemical processing and refining plants.

08

Construction Machinery

Excavators, cranes, loaders, drilling rigs working under impact loads.

09

Marine & Offshore

Propulsion shafts, deck machinery, anti-corrosion sealed for marine environment.

SECTION 07 / ENGINEERING DEEP DIVE

Why NTN Outperforms in Critical Applications

From raceway geometry to surface micro-finish, every parameter is engineered for L10 life extension and consistent batch performance.

MATERIAL

Premium Carburized Steel

High-purity SUJ2 / 100Cr6 bearing steel with vacuum degassing. Carburized case depth precisely controlled at 2.5-3.5mm with HRC 60-62 surface hardness.

  • Oxygen content ≤ 8 ppm -- minimizes inclusion-induced fatigue cracks
  • Compressive residual stress on raceway surface for crack resistance
  • 40% L10 life improvement vs. industry standard steel
SEALING

Multi-Lip NBR / FKM Seals

Choice of contact (2RS), non-contact (2Z) and metal shielded (ZZ) options. Designed for IP65 dust ingress protection and grease retention.

  • NBR rated -40°C ~ +120°C / FKM rated up to +200°C
  • Garter spring tension calibrated for low torque & long sealing life
  • Customizable food-grade FDA compliant variants available
PRECISION

P0 to P5 Tolerance Class

Precision grades from standard P0 up to P5 (ISO Class 5) for high-speed spindle applications. Inspected on Mahr / Talyrond CMM equipment.

  • Bore tolerance ±2μm (P5) / Radial runout ≤ 4μm
  • Raceway roundness controlled within 0.8μm
  • Vibration class Z2/Z3/Z4 for low-noise applications
CLEARANCE

CN / C3 / C4 Internal Clearance

Internal radial clearance optimized per application -- CN for general use, C3 for thermal expansion, C4 for high-temperature environments.

  • Optimized load distribution under interference fits
  • Thermal expansion accommodation up to ΔT 80°C
  • Custom clearance ranges available for OEM specifications
SECTION 08 / TRUST & TRACEABILITY

100% Genuine NTN.
Traceable. Warranted.

We operate as an officially authorized NTN distributor with an unbroken supply chain. Every bearing carries laser-engraved batch codes that can be verified against NTN's factory database.

Authorized Distributor

Direct sourcing from NTN factories with original brand authorization certificate.

Laser Batch Code

Every bearing engraved with traceable batch ID. Verifiable via NTN factory MES system.

Full Documentation

Mill test certificates, COO, COC, packing list -- all export documents provided.

12-Month Warranty

Standard 12-month quality warranty. Free replacement for verified manufacturing defects.

2,400+
OEM Customers
50+
Countries Served
99.97%
QC Pass Rate
10+
Years Experience
SECTION 09 / PACKAGING & SHIPPING

Export-Ready Packaging, Worldwide Door-to-Door Delivery

Real-time WMS inventory ensures rapid dispatch. Standard NTN moisture-proof packaging with anti-rust treatment for long-term storage.

NTN original packaging with moisture protection
PACKAGING

Original NTN Packaging

  • Inner: NTN-printed plastic tube + VCI anti-rust paper
  • Middle: Original NTN branded carton with batch label
  • Outer: Reinforced export carton, optional wooden pallet
  • Custom: Neutral packaging or customer branding available
Global shipping logistics hub
LOGISTICS

Global Shipping Options

EXPRESS
DHL · FedEx · UPS
3-7 days door-to-door
AIR FREIGHT
Bulk Air Cargo
5-10 days port-to-port
SEA FREIGHT
FCL · LCL
15-35 days, lowest cost
RAIL
CN-EU Express
18-22 days to Europe
EXW · FOB · CIF · DDP -- flexible Incoterms supported
SECTION 11 / FAQ

Frequently Asked
Questions

Common questions from OEM and distributor partners. Can't find an answer? Contact our engineering team directly.

Ask a custom question
Q.01 How can I verify the authenticity of NTN bearings I receive?

Every NTN bearing has laser-engraved batch codes on the inner ring. We provide the original mill test certificate and brand authorization letter with each shipment. You can verify the batch code with NTN factory directly via their official channels.

Q.02 What is the typical lead time and minimum order quantity?

In-stock items ship within 5-7 working days. MOQ starts from 1 piece for samples. Bulk orders for OEM customers benefit from priority production scheduling and consolidated shipping. Custom non-standard bearings typically take 30-45 days.

Q.03 Do you offer OEM customization (clearance, sealing, precision)?

Yes. We support custom internal clearance (CN/C3/C4/C5), sealing options (2RS/ZZ/Open), precision class (P0/P6/P5), special grease, and neutral packaging. Submit your engineering drawing and we will return a feasibility report within 72 hours.

Q.04 What documentation is provided for international shipping?

Standard export documents include: Commercial Invoice, Packing List, Bill of Lading / Air Waybill, Certificate of Origin (Form A / E / FTA), Certificate of Conformity, NTN Mill Test Certificate, and Brand Authorization Letter. Customs HS code and country-specific requirements are pre-checked.

Q.05 What is your warranty and return policy?

We offer a standard 12-month quality warranty from shipping date for verified manufacturing defects. Defective products are replaced free of charge. Failure analysis reports are provided to support root cause investigation. Wear due to misapplication or improper installation is excluded.

Q.06 Can you ship under DDP terms to my country?

Yes. We support EXW, FOB, CIF, CFR, and DDP terms. Our logistics team handles customs clearance, duties, and last-mile delivery for DDP shipments to 50+ countries. For sensitive markets, we recommend DDP to avoid customs delays.

PRODUCT DESCRIPTION

Detailed Product Information

Ensure uninterrupted plastic film stretching operations with NTN Deep Groove Ball Bearing 6252 6352—engineered to deliver consistent radial load handling and extended service life in high-speed machinery. As an official NTN distributor, we provide full ISO 9001 traceability documentation, eliminating customs clearance delays and quality disputes for your production line.

  • Single-row, unseparated design maintains precise alignment under continuous stretch film tension, reducing unexpected downtime
  • Premium bearing steel construction ensures resistance to wear and heat buildup, critical for maintaining film thickness uniformity
  • Direct OEM supply chain guarantees batch consistency, so your machinery performs reliably across all production runs

Description

Product Specifications

Parameter Details
Model NO. 6252 6352
Separated Unseparated
Rows Number Single
Load Direction Radial Bearing
Material Bearing Steel
Specification 10*26*8mm
Trademark NTN
Origin Germany Sweden Japan
HS Code 8482102000

Application Industries

Industry Typical Equipment
Plastic Manufacturing Plastic Film Stretching Machinery
General Machinery Conveyors, Packaging Equipment
Automotive Production Line Machinery

Eliminate Downtime Risks with NTN 6252 6352 Deep Groove Ball Bearings for Plastic Film Machinery

Plastic film stretching machinery operators know the cost of unexpected downtime—replacements delayed by unreliable suppliers, counterfeit bearings failing prematurely, and documentation gaps causing customs hold-ups. These issues don’t just disrupt production schedules; they create cascading losses across your entire operation.

ISO 9001 Traceable Bearings, Ready for Immediate Shipment

Our NTN Deep Groove Ball Bearings 6252 and 6352 are engineered to solve these challenges. As an official NTN distributor, we ensure every bearing comes with full traceability documentation, eliminating customs clearance obstacles. With WMS real-time inventory, we maintain stock for immediate dispatch, aligning with your production scheduling needs for plastic film stretching applications.

Optimal Performance in Plastic Film Stretching Machinery

These single-row radial bearings excel in the continuous, high-speed rotation of plastic film stretching machinery. Designed to handle radial loads with precision, their bearing steel construction ensures durability under the consistent operational demands of film production lines. The unseparated design provides structural stability, critical for maintaining alignment in machinery where even minor misalignment can compromise film quality.

Technical Features That Ensure Reliability

The 10*26*8mm specification balances compact size with load-bearing capacity, making it ideal for space-constrained machinery components. The use of high-grade bearing steel enhances wear resistance, extending service life in the dusty, moderate-temperature environments typical of plastic manufacturing. As radial bearings, they efficiently transfer loads from rotating shafts to stationary housings, reducing stress on adjacent components and minimizing maintenance requirements.

Why Genuine NTN Bearings Reduce Total Cost of Ownership

Counterfeit bearings may offer lower upfront costs, but they often fail within 30-50% of the expected lifespan of genuine NTN products. This leads to repeated replacements, unplanned downtime, and potential damage to expensive machinery parts. Our ISO 9001 compliant three-level quality inspection system ensures each bearing meets NTN’s strict standards, providing predictable performance that lowers long-term operational costs.

Why Global Manufacturers Choose Our NTN Bearings

With over 10 years of experience serving 50+ countries, we bring proven expertise to your supply chain. Our official authorized status guarantees direct access to NTN’s OEM-grade products, while our dedicated technical team provides application-specific support—from model selection to failure analysis. We offer flexible OEM customization and global door-to-door logistics, ensuring your bearings arrive on schedule, anywhere in the world.

Packaging & Shipping

  • Original NTN packaging with authentication labels
  • 3-7 business days delivery for in-stock items
  • Global logistics options including DHL, FedEx, UPS, air, and sea freight
  • Real-time tracking provided for all shipments
  • Minimum order quantity: 1 piece, supporting both emergency repairs and bulk orders

Secure Your Plastic Film Machinery’s Performance Today

Don’t let bearing issues disrupt your production. Send us your model requirements, application details, and order volume, and we’ll deliver a formal quotation with traceability certificates within 24 hours. Secure the reliability your operation demands with genuine NTN bearings.

Frequently Asked Questions

Q: Are these genuine NTN bearings?

A: Yes, we are an official NTN authorized distributor. Every bearing comes with full traceability documentation to confirm authenticity.

Q: How do I confirm if 6252/6352 is the right bearing for my machinery?

A: Provide your equipment model or operating parameters (load, speed, temperature), and our technical team will verify compatibility at no cost.

Q: What is your warranty policy?

A: We adhere to NTN’s original manufacturer warranty, covering manufacturing defects with unconditional replacement.

Q: What is the minimum order quantity?

A: We accept orders starting from 1 piece to support emergency maintenance needs.

Q: How quickly can you ship?

A: In-stock bearings ship within 3-7 business days via your preferred logistics method (DHL, FedEx, UPS, air, or sea freight).

Q: How can I verify the authenticity of the bearings?

A: Each bearing includes NTN’s original packaging with防伪标签, laser marking, and traceability documents that can be cross-verified through official channels.

Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.

SECTION 12 / GET QUOTATION

Ready to Order
6252?

Submit your inquiry below. Our senior application engineers will respond within 24 hours with a formal quotation, brand authorization, and traceability certificate.

  • Formal quotation in 24h
  • Sample within 5-7 days
  • 100% genuine guarantee
  • Worldwide DDP shipping
FORM · INQUIRY-6252 SECURE SSL

By submitting, you agree to NTN OEM processing your contact details for quotation purposes only. We never share information with third parties.

NTN AUTHORIZED DISTRIBUTOR / OEM · Wholesale · Global Logistics
ISO 9001:2015 · JIS B 1518