85TAC20X+L Bidirectional 60° Thrust Angular Contact Ball Bearing 85x130x54mm CNC Ball Screw Support Precision Bearing

85TAC20X+L is high-precision bidirectional thrust angular contact ball bearing with 60° large contact angle, standard dimension 85×130×54mm. X stands for optimized internal ball layout for higher axial rigidity; suffix L means matched spacer ring for direct preload assembly without extra adjustment parts. Double-row steel ball structure bears heavy bidirectional axial load, ultra-low thermal rise and stable high-speed rotation. Open structure allows customized high-temperature grease filling, widely used in CNC machining center ball screw supports, grinding machine spindles, precision lathe feed shafts and automated precision positioning equipment.

Model: 85TAC20X+L

Inner Diameter d: 85mm

Outer Diameter D: 130mm

Overall Width T: 54mm

Single Row Width C: 27mm

Min Fillet r: 1.1mm, r1:0.6mm

Contact Angle: 60°

Structure: Bidirectional thrust angular contact ball bearing with matched spacer ring

Cage: Solid brass machined cage

Material: GCr15 high carbon chromium bearing steel

Basic Dynamic Load Ca: 59.5kN

Basic Static Load C0a: 189kN

Grease Limiting Speed: 3600rpm; Oil Lubrication Speed:4300rpm

Net Weight: Approx 2.12kg

Precision Grade: Standard P4, P5 customizable

👉 Full technical installation drawing and preload matching datasheet available upon request

• 👉 60° large contact angle design delivers ultra-high axial rigidity, guarantee micron-level repeated positioning accuracy for precision CNC equipment
• 👉 X optimized ball arrangement increases bearing load capacity and service life under continuous heavy axial load
• 👉 Complete with L matched spacer ring, realize uniform preload after direct assembly, save machining & adjustment cost
• 👉 Solid brass cage owns excellent high-temperature resistance, low centrifugal deformation under long-hour high-speed operation
• 👉 Superfinished raceway and steel balls reduce friction heat, stable low-temperature rise during uninterrupted machining
• 👉 Multiple precision grades (P4/P5) meet different precision demands of lathe, grinder and machining center
• 👉 Open design supports high-temperature anti-oxidation grease filling for dusty, long-cycle production workshops
• 👉 High-rigidity bidirectional precision thrust bearing solution for CNC ball screw and machine tool spindle equipment

This 85TAC20X+L precision thrust bearing is widely matched to:

• CNC vertical/horizontal machining center ball screw support assemblies
• Precision surface grinders, internal grinders high-speed spindle rotary positioning parts
• Heavy-duty CNC lathe feed drive shafts and automatic tool changer transmission structures
• Precision testing equipment, automated robotic linear motion screw supports
• All precision machinery requiring bidirectional heavy axial load, high rigidity and low heat stable operation
• 👉 Cost-effective long-life high-precision screw support bearing for machine tool manufacturing industry

• 25+ years experience in TAC series precision thrust angular contact ball bearing manufacturing
• Exported to 50+ countries worldwide
• Rich OEM bulk order experience for 60° contact angle spindle & ball screw precision bearings
• Strict P4/P5 precision tolerance, high-speed temperature rise and axial rigidity inspection before shipment
• Fast professional technical reply within 24 hours
• Stable mass supply for long-term CNC machine tool factory cooperation
• 👉 We focus on stable high-rigidity low-temperature precision rotation performance and reliable long‑term partnership

• GCr15 bearing steel raw material composition & hardness inspection
• Ultra-precision superfinishing grinding for double-row raceway and steel balls
• Precision CNC machining for solid brass cage and L matched spacer ring
• Standard quenching & tempering heat treatment for uniform surface hardness HRC61–65
• Axial rigidity test, high-speed aging rotation test and full dimensional recheck
• Anti-rust oil treatment + independent shockproof plastic box packaging before delivery
• 👉 Consistent high-precision low-heat bidirectional thrust operation performance guaranteed for every bearing set

Looking for 60° contact angle P4 precision 85TAC20X+L bidirectional thrust ball bearing with spacer ring supplier?

👉 Send your inquiry to get:

• Fast factory quotation within 24h
• Professional CNC ball screw spindle precision bearing technical parameter support
• Custom P5 precision & special high-temperature grease solution suggestions
• Competitive bulk wholesale factory price
• 👉 Click “Send Inquiry” or contact us now