Product Overview

The NMT 7010 CDGBTP/P4B is an open, universally matchable single-row super-precision angular contact ball bearing. With a 50 mm bore, 80 mm outer diameter, and 16 mm width, this bearing features a 15° contact angle (CD type) and high-capacity D-type design, combined with a glass fibre reinforced PA46 cage (TP) and all-steel rolling elements, factory-preset with Class B medium preload (GB). It integrates ultra-high precision, high load capacity, and flexible arrangement capability into a single package, accommodating radial and unidirectional axial loads simultaneously.

 

The bearing offers a basic dynamic load rating of 29.6 kN and a static load rating of 24.0 kN. The GB universal matchable suffix indicates that this bearing features universal matchable (SU) capability – any two bearings of the same model can be directly paired without selective shimming or additional grinding. Users can freely configure them in back-to-back (<>), face-to-face (><), or tandem (>>) arrangements. Manufactured to the P4B super-precision tolerance class – with dimensional accuracy to ISO Class 4, narrower tolerance ranges on bore and outside diameter than P4A, and geometrical tolerances better than ISO Class 3 – the bearing achieves a limiting speed of 28,000 r/min under oil lubrication.

 

Model Code Decoding – Understanding NMT 7010 CDGBTP/P4B

Code Meaning

7010 Basic series designation, 50 mm bore, 80 mm OD

CD 15° contact angle design – offers higher limiting speed and lower heat generation than 25° designs

D High-capacity D-type design – optimized internal geometry for higher load capacity

G Single bearing (not a pre-assembled set)

B Class B medium preload – ideal for high-speed heavy-load applications

TP Glass fibre reinforced PA46 cage – rolling element guided, high strength, heat resistance, excellent dimensional stability at high speeds

P4B Super-precision tolerance class – dimensional accuracy to ISO Class 4, narrower tolerance ranges on bore and OD than P4A, geometrical tolerances better than ISO Class 3

Core Value: GB universal matchability means every NMT 7010 CDGBTP/P4B bearing's end-face height difference and parallelism are tightly controlled, allowing any two bearings of the same model to be directly paired without selection or re-grinding. The TP glass fibre reinforced PA46 cage provides excellent dimensional stability and wear resistance at high speeds, reducing lubricant churning losses. P4B super-precision ensures narrower bore and OD tolerance ranges than P4A and geometrical tolerances better than ISO Class 3 – these three elements work together to make this bearing the flagship general-purpose precision bearing offering the perfect balance of ultimate precision and flexible arrangement.

 

Core Performance Advantages

1. P4B Super-Precision Grade – Ultimate Accuracy Beyond P4A

P4B is SKF's ultra-high precision tolerance class, with dimensional accuracy to ISO Class 4, narrower tolerance ranges on bore and outside diameter than P4A, and geometrical tolerances better than ISO Class 3. Critical geometric tolerances including radial runout of inner and outer rings and end-face parallelism are minimized, ensuring extremely high rotational accuracy, stable shaft trajectory, and effective suppression of system vibration and noise.

 

2. 15° Contact Angle (CD Type) + D-Type High-Capacity Design – Perfect Balance of Speed and Load

The 15° small contact angle generates less frictional heat at equivalent speeds, offering higher limiting speed potential than 25° contact angle designs. The D-type high-capacity design, with optimized internal geometry and rolling element parameters, achieves an outstanding 29.6 kN dynamic and 24.0 kN static load rating within a compact 16 mm width. The bearing weighs only 0.249 kg.

 

3. Glass Fibre Reinforced PA46 Cage (TP) – Speed and Durability Combined

The TP cage is manufactured from glass fibre reinforced polyamide 46 (PA46) material, offering distinct advantages over standard phenolic cages:

 

Superior dimensional stability: Maintains precise rolling element guidance at high speeds

 

Enhanced wear resistance: Extends cage service life

 

Reduced churning losses: Minimizes lubricant resistance and heat generation

 

Wide operating temperature range: -40°C to 170°C

 

4. Universal Matchable (GB) – One Inventory, Infinite Arrangements

GB universal matchability delivers outstanding value:

 

Simplified inventory: Stock a single model to cover DB, DF, and DT pairing needs

 

On-site flexibility: Change arrangements during commissioning based on actual load directions

 

Easy maintenance: Replace individual bearings without replacing entire matched sets

 

No shims required: Install directly to achieve design preload

 

5. Class B Medium Preload – Ideal for High-Speed Heavy-Load Applications

Class B medium preload provides "just-right" internal contact stiffness for high-speed spindles – eliminating internal clearance and reducing vibration and noise at high speeds, while providing higher system rigidity than Class A extra light preload, making it particularly suitable for heavy-load high-speed applications requiring greater stiffness.

 

6. All-Steel Construction – High Rigidity, Impact Resistance, Cost-Effectiveness

Manufactured from high-quality vacuum-degassed bearing steel with special heat treatment ensuring material uniformity and long-term operational reliability. Compared to hybrid ceramic versions, all-steel construction offers higher fracture toughness and impact resistance – more reliable under interrupted cutting and accidental overload conditions.

 

7. Clear Performance Specifications

 

Parameter Value

Bore d 50 mm

Outer Diameter D 80 mm

Width B 16 mm

Contact Angle 15°

Dynamic Load Rating C 29.6 kN

Static Load Rating C₀ 24.0 kN

Fatigue Load Limit Pu 1.02 kN

Speed (Grease) 17,000 r/min

Speed (Oil) 28,000 r/min

Ball Material Chrome Steel

Ring Material Chrome Steel

Cage Material Glass Fibre Reinforced PA46

Seal Type Open

Tolerance Class P4B

Preload Class B (Medium)

Arrangement Universal Matchable (SU)

Weight 0.249 kg

Temperature Range -30°C to 110°C

Typical Applications

The NMT 7010 CDGBTP/P4B, with its P4B ultra-high precision, TP high-strength cage, and universal matchable flexibility, covers an exceptionally wide range of high-end applications:

 

High-Speed Machine Tool Spindles – CNC machine tools, precision grinders, milling center spindles

 

High-Speed Electric Spindles – high-speed rotary units

 

Machining Center Spindles – vertical/horizontal spindle systems

 

Precision Rotary Tables – high-accuracy rotary positioning

 

High-Precision Grinding Machine Spindles – internal/external grinding, jig grinders

 

High-Precision Industrial Gearboxes – precision transmission systems

 

Pumps and Compressors – high-speed rotating machinery

 

Aerospace Components – high precision and reliability requirements

 

Semiconductor Manufacturing Equipment – precision wafer processing spindles

 

Important Installation Notes

✅ This bearing is universally matchable (GB) – any two bearings of the same model can be directly paired.

 

✅ This bearing is open design – select appropriate lubrication method based on application. To achieve the 28,000 r/min oil lubrication limiting speed, oil-air or oil-mist lubrication is recommended; grease lubrication limits speed to 17,000 r/min.

 

✅ For paired installations, using bearings from the same production batch is recommended for optimal consistency.

 

⚠️ This bearing comes with factory-preset Class B medium preload. No additional preload adjustment is required during installation. However, ensure shaft and housing fits comply with P4B grade requirements.

 

⚠️ The TP cage is made of glass fibre reinforced PA46 – avoid contact with sharp tools during installation to prevent cage damage.

 

⚠️ Ensure the contact angle direction matches the intended load direction – incorrect orientation will eliminate load capacity.

 

NMT Quality Commitment

Japan NMT (Enmutī) applies strict Japanese quality standards to every 7010 CDGBTP/P4B bearing – from ring material (high-quality vacuum-degassed bearing steel) and rolling elements to superfinishing processes. End-face height difference, parallelism, and contact angle deviation of each bearing are tightly controlled to ensure universal matchability consistency across any two bearings of the same model. The combination of P4B ultra-high precision, 15° contact angle (CD type), D-type high-capacity design, TP glass fibre reinforced PA46 cage, and Class B medium preload makes this bearing the highest-precision, most flexible flagship general-purpose bearing in the NMT 7010 series.

 

Choose NMT 7010 CDGBTP/P4B for:

 

✅ P4B ultra-high precision – narrower bore/OD tolerances, geometrical tolerances better than ISO Class 3

 

✅ TP glass fibre reinforced PA46 cage – high strength, heat resistance, precise guidance

 

✅ 15° contact angle + D-type high capacity – 29.6 kN powerful load capacity

 

✅ Universal matchable – one inventory, infinite arrangements

 

✅ Class B medium preload – ideal for high-speed heavy-load applications

 

✅ P4B super-precision running accuracy

 

✅ All-steel – high rigidity, impact resistance, cost-effectiveness

 

✅ -30°C to 110°C wide temperature range capability