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Cylindrical Roller Bearings NTN NUP2311EM 55x120x43mm for Motorcycle OEM Applications thumbnail 1
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NTN GENUINE
IN STOCK
Cylindrical Roller Bearings NTN NUP2311EM 55x120x43mm for Motorcycle OEM Applications
Cylindrical Roller Bearings NTN NUP2311EM 55x120x43mm for Motorcycle OEM Applications - Side View
Cylindrical Roller Bearings NTN NUP2311EM 55x120x43mm for Motorcycle OEM Applications - Detail
Cylindrical Roller Bearings NTN NUP2311EM 55x120x43mm for Motorcycle OEM Applications - Dimension
Model
NTN-750
Origin
JAPAN
Lead Time
5-7 DAYS
NTN AUTHORIZED · OEM SUPPLIER

Cylindrical Roller Bearings NTN NUP2311EM 55x120x43mm for Motorcycle OEM Applications

MODEL: NTN-750 100% Genuine · Traceable

Ensure seamless motorcycle powertrain performance with the NTN NUP2311EM cylindrical roller bearing, engineered to deliver consistent radial load handling and precise shaft alignment in high-rev applications. This 55x120x43mm bearing features separable inner/outer rings for easy installation and maintenance, reducing downtime during repairs or upgrades.NTN Japan original quality with full traceability documentation, eliminating compliance risks in global OEM supply chainsBearing steel construction and P0-P2 precision ratings ensure durability under continuous operation, supporting stable production schedulingGrease or oil lubrication flexibility adapts to diverse motorcycle engine designs, backed by our 10+ years technical team for application-specific guidance

Key Specifications
SPEC-01
Bore (d)
55mm
OD (D)
120mm
Width (B)
43mm
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)55 mm
Outer Diameter (D)120 mm
Width (B)43 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 TypeCylindrical Roller 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 seamless motorcycle powertrain performance with the NTN NUP2311EM cylindrical roller bearing, engineered to deliver consistent radial load handling and precise shaft alignment in high-rev applications. This 55x120x43mm bearing features separable inner/outer rings for easy installation and maintenance, reducing downtime during repairs or upgrades.

  • NTN Japan original quality with full traceability documentation, eliminating compliance risks in global OEM supply chains
  • Bearing steel construction and P0-P2 precision ratings ensure durability under continuous operation, supporting stable production scheduling
  • Grease or oil lubrication flexibility adapts to diverse motorcycle engine designs, backed by our 10+ years technical team for application-specific guidance

Description

Product Specifications

Parameter Details
Model NO. NUP2311EM
Outer Dimension 35mm-180mm
Material Bearing Steel
Spherical Non-Aligning Bearings
Load Direction Radial Bearing
Separated Separated
Product Name Cylindrical Roller Bearing
Bore Size 15-90 mm
Structure Cylindrical
Lubrication Grease or Oil
Precision Rating P0 P6 P5 P4 P2
Vibration Z1V1 Z2V2 Z3V3
Service OEM ODM
Transport Package Carton Pallet
Specification 55*120*43mm
Trademark NTN
Origin Japan
HS Code 8482500090
Production Capacity 100000
Package Size 14.00cm * 14.00cm * 6.30cm
Package Gross Weight 2.900kg

Application Industries

Industry Typical Equipment
Automotive Motorcycles, Engines, Gearboxes
Motors Electric Motors, Generators
General Machinery Machine Tools, Pumps, Compressors

Stop Motorcycle Production Delays with Genuine NTN NUP2311EM Bearings

Motorcycle OEM factories face critical challenges with counterfeit bearings causing premature failures, leading to costly production line shutdowns. Multi-layer distribution channels often result in unpredictable delivery times, disrupting manufacturing schedules and increasing operational risks. Without proper technical support, selecting the right bearing for high-performance motorcycle applications becomes a gamble, potentially leading to increased maintenance costs and reduced product reliability.

Genuine NTN NUP2311EM Bearings for Reliable Motorcycle Manufacturing

As an official NTN distributor, we provide authentic NTN NUP2311EM cylindrical roller bearings, eliminating the risks of counterfeit products. Our ISO 9001 compliant three-level quality inspection system ensures each bearing meets strict standards, while full product traceability documentation simplifies customs clearance and quality control processes. With WMS real-time inventory, we offer stable bulk supply to keep your motorcycle production lines running smoothly, supported by a 10+ year technical team for expert application guidance.

Optimal Performance in Motorcycle Transmissions and Engines

The NTN NUP2311EM cylindrical roller bearing, with dimensions 55x120x43mm, is specifically designed for motorcycle OEM applications, excelling in high-speed, radial load environments. Its separated structure allows for easy installation and maintenance, making it ideal for motorcycle transmissions and engine components where reliability and durability are paramount. The bearing’s precision construction ensures consistent performance under varying operating conditions, contributing to the overall efficiency and longevity of motorcycle powertrains.

Technical Features Ensuring Superior Motorcycle Performance

The NTN NUP2311EM cylindrical roller bearing incorporates several key technical features that enhance its performance in motorcycle applications. Its bearing steel material provides high strength and wear resistance, critical for withstanding the demanding conditions of motorcycle operation. Available precision ratings from P0 to P2 allow customization based on specific application requirements, ensuring optimal fit and function. The bearing’s vibration levels (Z1V1 to Z3V3) are carefully controlled to minimize noise and ensure smooth operation, a key consideration for motorcycle comfort and performance. Additionally, the separated design facilitates efficient lubrication with either grease or oil, adapting to different motorcycle maintenance protocols and operating environments.

Long-Term Value of Genuine NTN Motorcycle Bearings

Choosing genuine NTN NUP2311EM bearings over counterfeit alternatives reduces the total cost of ownership for motorcycle manufacturers. Counterfeit bearings often fail prematurely, leading to production downtime, increased maintenance costs, and potential liability issues. In contrast, genuine NTN bearings provide consistent performance, longer service life, and reliable traceability, ensuring compliance with international quality standards. The investment in authentic components translates to fewer production disruptions, lower replacement costs, and enhanced reputation for producing high-quality motorcycles.

Why Motorcycle Manufacturers Trust Our NTN Bearing Supply

Our position as an official NTN distributor ensures direct access to genuine products with complete traceability, supported by official authorization documentation. With over 10 years of experience serving clients across 50+ countries, we understand the unique needs of motorcycle OEMs. Our dedicated technical team provides personalized support, from model selection to installation guidance and failure analysis. We maintain real-time inventory through our WMS system, enabling flexible OEM customization and timely delivery. Our global door-to-door logistics network ensures reliable supply, while our ISO 9001 quality management system guarantees consistent product quality. We offer comprehensive export documentation, simplifying international trade and compliance processes for our clients.

Packaging & Shipping

  • Carton pallet packaging with protective measures to ensure bearing integrity during transit
  • Standard delivery within 3-7 business days for in-stock items
  • Flexible shipping options including DHL, FedEx, UPS, air freight, and sea freight
  • Real-time logistics tracking provided for all shipments
  • Minimum order quantity of 1 piece, supporting both emergency maintenance and small-batch production needs

Secure Your NTN NUP2311EM Bearings for Uninterrupted Production

Don’t let bearing issues disrupt your motorcycle manufacturing schedule. Contact us with your NTN NUP2311EM bearing requirements, including quantity and application details, to receive a formal quotation within 24 hours. Our streamlined process supports sample testing and small-batch trials, ensuring the bearing meets your exact specifications before full-scale production. Secure your supply today and maintain the reliability of your motorcycle production line.

Frequently Asked Questions

Q: Are these genuine NTN bearings?

A: Yes, we are an official NTN distributor, and all our products are 100% genuine with complete traceability documentation and brand authorization.

Q: How can I confirm if the NTN NUP2311EM is suitable for my motorcycle application?

A: Our technical team can assist with model selection. Please provide your motorcycle model, application details, and operating parameters for a free compatibility check.

Q: What is your warranty policy for NTN bearings?

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

Q: What is the minimum order quantity for the NTN NUP2311EM bearing?

A: We accept orders starting from 1 piece, supporting both emergency maintenance and small-batch production requirements.

Q: How long does shipping take, and what logistics options are available?

A: In-stock items are typically shipped within 3-7 business days. We offer flexible logistics including DHL, FedEx, UPS, air freight, and sea freight based on your needs.

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SECTION 12 / GET QUOTATION

Ready to Order
NTN-750?

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
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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