GQZ GW208PPB8 Spherical Outer Square Bore Agricultural Ball Bearing 28.575×80mm Triple Lip Seal Relubricable

The GW208PPB8 is a heavy-duty agricultural square bore ball bearing with spherical outer ring and triple lip multi-layer seals, specially designed for disc harrows and farm tillage equipment. It fits 1-1/8 inch square shafts without extra locking collars, supports heavy radial loads in muddy, dusty farm environments, and comes with grease fitting for periodic re-lubrication.

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Model

GW208PPB8

Square Bore (d)

28.575 mm (1-1/8 inch)

Outer Diameter (D)

80 mm

Inner Ring Total Width (B)

36.53 mm

Outer Ring Width (C)

30.18 mm

Structure

Single row deep groove ball bearing, spherical O.D., square inner bore

Material

GCr15 chrome bearing steel

Seal Type

Triple lip tri-ply rubber metal composite seal

Relubricable

Yes, with grease nipple

Basic Dynamic Load Cr

26200 N

Basic Static Load C0r

19900 N

Approx Net Weight

0.75 kg

👉 Full technical data and drawings available upon request

• Special square inner bore perfectly matches square farm shafts, no slipping during heavy tillage
• Spherical outer ring allows minor self-alignment to absorb assembly misalignment
• Triple-ply multi-layer seals block mud, dust, crop residue and water splash effectively
• Wide inner ring provides larger contact area for stable heavy load support
• Grease fitting design supports re-lubrication to extend service life
• Custom options: high temperature grease, anti-rust surface treatment, OEM marking

👉 Helps reduce maintenance cost and improve machine performance in harsh farm conditions

This bearing is widely used in:

• Disc harrow, plough and tillage agricultural machinery
• Farm rotary rakes, grain conveying equipment
• Heavy-duty lawn and large garden farming implements
• Agricultural wheel hubs and crop processing transmission parts

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

• 25+ years experience in agricultural special bearing manufacturing
• Exported to 50+ countries worldwide
• Rich experience in OEM & custom square bore farm bearing projects
• Strict full-process quality inspection before shipment
• Fast response within 24 hours for technical consultation
• Stable bulk supply for agricultural machinery distributors

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

• Raw material hardness inspection for GCr15 bearing steel
• Precision grinding & superfinishing of raceway and square bore
• Heat treatment metallurgy and hardness control
• Seal tightness, load & rotation smoothness testing
• Final dimensional and appearance inspection before delivery

👉 Ensuring consistent stable performance for every bearing unit

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• Professional engineer technical support
• Custom bearing solution suggestions
• Competitive factory direct price

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