GQZ 31318J2/DF Face‑To‑Face DF Matched Tapered Roller Bearing 90×190×93mm Pre‑Set Duplex Bearing Set

The 31318J2/DF duplex tapered roller bearing is factory pre‑ground and face‑to‑face (DF) matched set with J2 optimized roller profile. DF face‑to‑face arrangement delivers good angular misalignment tolerance and bears combined radial and bidirectional axial loads simultaneously. Pre‑matched assembly eliminates manual pairing error for heavy‑duty rotary shafts requiring preload setting.

It is widely used for heavy gearboxes, mining reducers and engineering machinery main shaft assemblies.

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👉 Full technical data and drawings available upon request

• DF face‑to‑face matched structure allows moderate angular misalignment compensation
• J2 optimized roller geometry improves stress distribution for higher shock‑load resistance
• Factory pre‑ground matched set ensures consistent preload, saves on‑site pairing work
• Combined capacity for heavy radial load plus bidirectional axial thrust load
• Separable cone‑cup design enables convenient disassembly and inspection
• Custom design available (P6/P5 precision grade, special anti‑rust treatment, OEM laser marking)

👉 Helps reduce maintenance cost and improve machine performance

This bearing is widely used in:

• Heavy‑duty industrial gear reducers and mining transmission main shafts
• Construction machinery, large hoist equipment and metallurgical rotary machinery
• Cement plant rotary equipment and bulk‑material handling drive assemblies
• General heavy machinery spindles requiring bidirectional axial positioning

👉 Ideal for customers looking for reliable and long‑life bearing solutions

• 25+ years experience in industrial bearing manufacturing
• Exported to 50+ countries worldwide
• Rich experience in OEM DF duplex matched tapered roller bearing custom projects
• Strict duplex‑matching tolerance, contact angle and rotation performance inspection before shipment
• Fast response within 24 hours
• Stable supply for long‑term cooperation

👉 We focus on quality, reliability, and long‑term partnership

• Raw material hardness inspection
• Precision grinding & superfinishing raceway machining
• Heat treatment metallurgy control
• Duplex matching tolerance, contact angle and rotation smoothness testing
• Final dimensional & appearance inspection before delivery

👉 Ensuring consistent performance for every bearing set

Looking for a reliable bearing supplier?

👉 Send your inquiry to get:

• Fast quotation within 24 hours
• Technical support from engineers
• Custom duplex‑matched tapered bearing matching solution suggestions
• Competitive factory price

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