Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
NTN Radial Ball Bearing: 6318, Open, 90 mm Bore, 190 mm OD, 43 mm Wd - Ceramic Insulated Radial Ball Bearings
NTNCeramic Insulated Radial Ball Bearings

NTN Radial Ball Bearing: 6318, Open, 90 mm Bore, 190 mm OD, 43 mm Wd

The NTN 6318 is a metric ceramic insulated radial ball bearing with a 90 mm bore, 190 mm OD, and 43 mm width. It features an open design with alloy steel rings and is identified by manufacturer part number 7MC3-6318C3.

SKU 3G-OTH-100480

Brand
NTN
Item
Radial Ball Bearing: 6318, Open, 90 mm Bore, 190 mm OD, 43 mm Wd
Category
Ceramic Insulated Radial Ball Bearings
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

NTN
Manufacturer Part Number
7MC3-6318C3
Type
Open, Alloy Steel Ring
Bore
90 mm
OD
190 mm
Wd
43 mm
System of Measurement
Metric
Bearing Industry Number
6318
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

NTN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The NTN 6318 is a metric ceramic insulated radial ball bearing with a 90 mm bore, 190 mm OD, and 43 mm width. It features an open design with alloy steel rings and is identified by manufacturer part number 7MC3-6318C3.

Frequently Asked Questions

What is the NTN 6318 ceramic insulated radial ball bearing used for?

The NTN 6318 ceramic insulated radial ball bearing is used in electric motors and generators to prevent electrical pitting damage. Its ceramic coating on the outer ring blocks stray currents, making it ideal for variable-frequency drive (VFD) applications in industrial machinery, pumps, and compressors.

What are the specifications of the NTN 6318 bearing?

The NTN 6318 is a metric ceramic insulated radial ball bearing with a 90 mm bore, 190 mm OD, and 43 mm width. It has an open design with alloy steel rings and manufacturer part number 7MC3-6318C3. The bearing industry number is 6318, and it uses a C3 internal clearance.

Where to buy the NTN 6318 bearing worldwide?

You can source the NTN 6318 bearing worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine NTN bearings to customers across industries.

How to select the correct NTN 6318 bearing for an application?

To select the correct NTN 6318 bearing, verify the shaft diameter (90 mm bore), housing bore (190 mm OD), and width (43 mm). Confirm the C3 internal clearance suits your operating temperature. For VFD motors, the ceramic insulated design prevents electrical erosion. Always match the NTN part number 7MC3-6318C3 for exact fit.

Used in

Common applications for NTN
Automotive driveline — NTN tapered roller bearing assemblies (e.g., 4T-30303) for differential and wheel hub applications
Conveyor systems — NTN 4-bolt flange bearings (e.g., UCF211-200D1) for idler rollers and take-up units
Machine tool spindles — NTN duplex angular contact bearings (e.g., ML7006CVDUJ74S) for high-speed precision rotation
Industrial fans — NTN high-temperature radial ball bearings (e.g., 6004FT150) for oven and dryer exhaust systems
Pump drives — NTN radial ball bearings (e.g., 6008LLBC3/L627) for electric motor and pump shaft support
Agricultural equipment — NTN tapered roller bearing cones (e.g., LM29748L) for gearbox and PTO shaft assemblies

NTN Products

3G Electric supplies NTN ceramic insulated radial ball bearings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
NTN Radial Ball Bearing: 6317, Open, 85 mm Bore, 180 mm OD, 41 mm Wd, Alloy Steel Ring (MPN 7MC3-6317C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6317.
NTN
NTN Radial Ball Bearing: 6317, Open, 85 mm Bore, 180 mm OD, 41 mm Wd, Alloy Steel Ring (MPN 7MC3-6317C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6317.
NTN Radial Ball Bearing: 6319, Open, 95 mm Bore, 200 mm OD, 45 mm Wd, Alloy Steel Ring (MPN 7MC3-6319C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6319.
NTN
NTN Radial Ball Bearing: 6319, Open, 95 mm Bore, 200 mm OD, 45 mm Wd, Alloy Steel Ring (MPN 7MC3-6319C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6319.
NTN Radial Ball Bearing: 6315, Open, 75 mm Bore, 160 mm OD, 37 mm Wd, Alloy Steel Ring (MPN 7MC3-6315C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6315.
NTN
NTN Radial Ball Bearing: 6315, Open, 75 mm Bore, 160 mm OD, 37 mm Wd, Alloy Steel Ring (MPN 7MC3-6315C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6315.
NTN Radial Ball Bearing: 6313, Open, 65 mm Bore, 140 mm OD, 33 mm Wd, Alloy Steel Ring (MPN 7MC3-6313C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6313.
NTN
NTN Radial Ball Bearing: 6313, Open, 65 mm Bore, 140 mm OD, 33 mm Wd, Alloy Steel Ring (MPN 7MC3-6313C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6313.
NTN Radial Ball Bearing: 6314, Open, 70 mm Bore, 150 mm OD, 35 mm Wd, Alloy Steel Ring (MPN 7MC3-6314C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6314.
NTN
NTN Radial Ball Bearing: 6314, Open, 70 mm Bore, 150 mm OD, 35 mm Wd, Alloy Steel Ring (MPN 7MC3-6314C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6314.
NTN Radial Ball Bearing: 6310, Open, 50 mm Bore, 110 mm OD, 27 mm Wd, Alloy Steel Ring, Class 0 (MPN 7MC3-6310C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6310.
NTN
NTN Radial Ball Bearing: 6310, Open, 50 mm Bore, 110 mm OD, 27 mm Wd, Alloy Steel Ring, Class 0 (MPN 7MC3-6310C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6310.

More from NTN

View all NTN parts →
NTN Radial Ball Bearing: 6311, Open, 55 mm Bore, 120 mm OD, 29 mm Wd, Alloy Steel Ring, Class 0 (MPN 7MC3-6311C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6311.
NTN
NTN Radial Ball Bearing: 6311, Open, 55 mm Bore, 120 mm OD, 29 mm Wd, Alloy Steel Ring, Class 0 (MPN 7MC3-6311C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6311.
NTN Radial Ball Bearing: 6312, Open, 60 mm Bore, 130 mm OD, 31 mm Wd, Alloy Steel Ring, Class 0 (MPN 7MC3-6312C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6312.
NTN
NTN Radial Ball Bearing: 6312, Open, 60 mm Bore, 130 mm OD, 31 mm Wd, Alloy Steel Ring, Class 0 (MPN 7MC3-6312C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6312.
NTN Radial Ball Bearing: 6316, Open, 80 mm Bore, 170 mm OD, 39 mm Wd, Alloy Steel Ring (MPN 7MC3-6316C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6316.
NTN
NTN Radial Ball Bearing: 6316, Open, 80 mm Bore, 170 mm OD, 39 mm Wd, Alloy Steel Ring (MPN 7MC3-6316C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6316.
NTN Radial Ball Bearing: 6322, Open, 110 mm Bore, 240 mm OD, 50 mm Wd, Alloy Steel Ring (MPN 7MC3-6322C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6322.
NTN
NTN Radial Ball Bearing: 6322, Open, 110 mm Bore, 240 mm OD, 50 mm Wd, Alloy Steel Ring (MPN 7MC3-6322C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6322.
NTN Radial Ball Bearing: 6224, Open, 120 mm Bore, 215 mm OD, 40 mm Wd, Alloy Steel Ring (MPN 7MC3-6224C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6224.
NTN
NTN Radial Ball Bearing: 6224, Open, 120 mm Bore, 215 mm OD, 40 mm Wd, Alloy Steel Ring (MPN 7MC3-6224C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6224.
NTN Radial Ball Bearing: 6218, Open, 90 mm Bore, 160 mm OD, 30 mm Wd, Alloy Steel Ring (MPN 7MC3-6218C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6218.
NTN
NTN Radial Ball Bearing: 6218, Open, 90 mm Bore, 160 mm OD, 30 mm Wd, Alloy Steel Ring (MPN 7MC3-6218C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6218.
NTN Radial Ball Bearing: 6230, Open, 150 mm Bore, 270 mm OD, 45 mm Wd, Alloy Steel Ring (MPN 7MC3-6230C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6230.
NTN
NTN Radial Ball Bearing: 6230, Open, 150 mm Bore, 270 mm OD, 45 mm Wd, Alloy Steel Ring (MPN 7MC3-6230C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6230.
NTN Radial Ball Bearing: 6215, Open, 75 mm Bore, 130 mm OD, 25 mm Wd, Alloy Steel Ring (MPN 7MC3-6215C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6215.
NTN
NTN Radial Ball Bearing: 6215, Open, 75 mm Bore, 130 mm OD, 25 mm Wd, Alloy Steel Ring (MPN 7MC3-6215C3). Key specifications — System of Measurement: Metric; Bearing Industry Number: 6215.