7916CBTADBBP4 Super Precision Angular Contact Ball Bearing 80x110x16 15‑Degree

1. Product Overview

7916CBTADBBP4 is super‑precision thin‑wall single‑row angular‑contact ball bearing matched set (back‑to‑back DB arrangement). Single bearing dimension: 80 mm bore × 110 mm OD × 16 mm width, 15° contact angle.
Suffix explanation:
‑ C: 15‑degree contact angle, optimized for high‑speed performance;
‑ BTA: Universal matching internal geometry, glass‑fiber reinforced nylon cage, ball guided;
‑ DB: Two‑piece set, back‑to‑back mounting arrangement, withstand bidirectional axial load and high tilting‑moment rigidity;
‑ BB: Factory preset medium preload for spindle applications;
‑ P4: ISO P4 ultra‑high precision tolerance grade.

Open‑type construction, suitable for grease, oil‑air or circulating‑oil lubrication. Manufactured from fully quenched GCr15 bearing steel. DB back‑to‑back paired assembly delivers high moment stiffness and strong resistance to tilting deflection. Factory‑controlled BB medium preload removes complicated on‑site shimming and preload adjustment work. Widely used for high‑speed machine‑tool spindles, grinding‑machine spindles, precision gearboxes, high‑speed test‑bench rotary assemblies and high‑accuracy automation equipment requiring P4 precision and medium preload.

2. Technical Specifications

Mounting‑shoulder drawing, medium preload parameter sheet and high‑speed performance test reports can be provided upon customer request.

3. Core Advantages

• 15‑degree contact angle: Outstanding high‑speed performance, balances radial load capacity and high‑speed rotational capability for spindle‑grade equipment.
• P4 ultra‑precision grade: Strict control of dimensional, geometric and running‑out tolerances, meets high‑speed machine‑tool spindle accuracy requirements.
• DB back‑to‑back factory‑matched pair: High moment rigidity, excellent anti‑tilting‑moment performance, stable under composite offset load conditions.
• BB factory preset medium preload: Preload value strictly controlled at factory. Customers can perform direct installation without manual shimming adjustment, reducing field assembly errors.
• BTA nylon cage: Glass‑fiber reinforced nylon construction, low friction, excellent high‑speed stability and vibration‑damping property for continuous high‑speed operation.
• Thin‑wall 79 series dimension, compact structure, saves installation space for limited‑envelope precision equipment.
• Open‑type design, compatible with multiple lubrication modes: grease, oil‑air and circulating‑oil lubrication systems for high‑speed spindle scenarios.
• Dimensionally interchangeable with international‑standard 7916CBTADBBP4 matched sets. Rich custom options: light / heavy preload variant, special grease, OEM laser marking, neutral export anti‑rust carton.

4. Application Scenarios

7916CBTADBBP4 P4‑precision DB back‑to‑back medium‑preload thin‑wall angular‑contact ball‑bearing set is compact high‑speed precision rotary spare‑part for 80 mm‑shaft high‑end industrial‑equipment:

• High‑speed machine‑tool spindle and grinding‑machine spindle rotary support assemblies
• Compact high‑precision industrial gearbox high‑speed shaft bearing units
• High‑speed dynamic test‑bench rotary spindle assemblies
• High‑accuracy automation rotary indexing equipment
• Other precision machinery requiring P4 accuracy, DB back‑to‑back arrangement and factory‑set BB medium preload

Aftermarket interchangeable 79‑series P4‑precision factory‑matched DB angular‑contact ball‑bearing set
Compact high‑speed low‑run‑out precision bearing solution for spindle manufacturers, precision‑gearbox OEMs and high‑end equipment bulk‑maintenance procurement.

5. Why Choose GQZ Bearing

• 25‑years manufacturing experience of super‑precision thin‑wall matched‑set angular‑contact ball‑bearings including 7916CBTADBBP4.
• 7916CBTADBBP4 matched‑set is dimension‑for‑dimension interchangeable with international‑standard counterparts, consistent P4‑precision tolerance, DB‑matching accuracy and BB medium‑pre‑load control standards.
• Complete OEM & ODM custom service covering light / heavy alternative preload grades, special‑temperature‑resistant grease and special‑processing requirements.
• Strict pre‑shipment QC: GCr15 raw‑material metallurgy & hardness inspection, ball‑sorting, ultra‑precision raceway super‑finishing, matched‑set pairing‑screening, BB pre‑load verification test, high‑speed temperature‑rise aging test.
• Professional precision‑spindle‑bearing engineering team provides one‑on‑one radial‑axial combined‑load calculation, shaft‑housing fit‑tolerance guidance and DB‑set installation tips within 24 working hours.
• Large‑scale precision‑production workshop offers competitive factory‑direct bulk‑wholesale price, stable long‑term supply for global machine‑tool, grinding‑machine and precision‑equipment spare‑part buyers.
• We focus on P4/P5‑precision thin‑wall factory‑matched angular‑contact ball‑bearing sets, controlled‑preload pairing‑technology, ISO‑metric‑precision‑dimension standards, pursuing win‑win long‑term cooperation with high‑speed precision‑transmission‑equipment suppliers.

6. Quality Control

• Raw‑material chemical‑composition, internal‑defect and hardness inspection for GCr15 inner‑ring, outer‑ring and steel‑ball blanks
• Precision turning, multiple stress‑relief tempering, ultra‑precision super‑finish grinding for inner‑outer raceway surfaces for P4‑precision requirements
• Steel‑ball high‑temperature quenching, mirror‑polishing and high‑precision auto‑sorting production‑line
• Glass‑fiber reinforced nylon BTA cage injection molding & finishing, single‑bearing dimensional‑tolerance & run‑out inspection
• Strict pairing‑screening procedure for DB back‑to‑back set; BB medium‑pre‑load value verification one‑by‑one for every matched‑set
• Targeted performance‑tests: 7916CBTADBBP4 matched‑set high‑speed temperature‑rise rotation aging test, moment‑stiffness simulation‑detection, pre‑load stability check
• Full re‑check for dimension‑tolerance, contact‑angle, matching‑mark and pre‑load parameter before anti‑rust‑oil coating and export moisture‑proof‑carton packing.

Each production batch of 7916CBTADBBP4 undergoes spindle‑simulation cyclic‑rotation test to guarantee stable low‑run‑out high‑stiffness rotary‑support performance for 80‑mm‑shaft high‑speed precision industrial‑transmission‑systems.

7. Get A Quote Now

If you need 7916CBTADBBP4 P4‑precision DB back‑to‑back matched angular‑contact ball‑bearing sets for high‑speed‑spindle manufacturing, precision‑gear‑box‑assembly and high‑end‑equipment‑maintenance bulk‑matching, send your purchase‑inquiry directly.
Full professional supporting‑services after inquiry submission:

• Official formal quotation reply within 24 working‑hours
• One‑on‑one radial‑&‑axial‑combined‑load calculation, shaft‑housing‑fit‑tolerance guidance and DB‑matched‑set installation technical‑support from professional‑precision‑bearing‑engineers
• Custom‑bearing‑performance‑upgrade options including light / heavy pre‑load and special‑temperature‑resistant‑grease
• Favorable factory‑direct bulk‑wholesale price for large‑volume 7916CBTADBBP4 single‑model‑orders

Please provide purchase‑quantity, working‑conditions (ultra‑high‑speed / high‑stiffness / lubrication‑mode) and continuous‑operating‑temperature to get detailed official‑quotation‑documents.

8. FAQ