MBWTD18 Self-Lubricating Spherical Plain Bearing with Double Seal

1. Product Overview

MBWTD18 is a wide-width self-lubricating spherical plain bearing derived from MBWT series, full model code breakdown:

• MBWT: Wide-body spherical plain bearing with integrated ball head structure, built-in PTFE self-lubricating liner
• D: Double lip dustproof sealing structure on both sides
• 18: 18mm inner bore matching dimension

Fully interchangeable with NMB original MBWTD18, widely applied to automotive control linkages, hydraulic cylinder swing joints, agricultural machinery articulated parts and small engineering equipment misalignment rotating assemblies.

Adopts all stainless steel inner ball & outer ring, solid PTFE composite self-lubricating liner pre-installed inside. Double-sided integrated rubber dust seal as standard; open unsealed MBWT18 version available for customization. No pre-grease maintenance required for standard self-lubricating configuration, C0 internal clearance factory default, special clearance adjustable upon request.

This bearing can bear heavy radial load and moderate bidirectional axial load, with built-in self-aligning capacity to compensate shaft-housing installation angle deviation, stable low-friction operation under alternating impact load and wide temperature range. Manufactured with precision grinding stainless steel and micron-level dimensional tolerance, direct plug-and-play replacement without modifying mounting housing or pin shaft. Complete formal quotation will be provided within 24 hours upon your inquiry.

2. Key Advantages

• MBWT wide-body spherical design: Larger contact area between ball and outer ring, higher heavy-load bearing capacity compared to standard narrow spherical bearings
• Built-in PTFE self-lubricating liner, low friction coefficient, long service life without frequent supplementary grease lubrication
• Suffix D double-sided rubber lip seal structure, effective blocking of dust, mud, water splash and impurity intrusion, protects internal PTFE liner from abrasion failure
• Stainless steel overall body, excellent rust and corrosion resistance, suitable for outdoor, wet and weak acid working environments
• Inherent self-aligning performance, automatically compensates assembly deflection and shaft bending deformation, avoids bearing jamming and abnormal wear
• Unified OEM mounting dimensions, no structural modification needed during articulated joint maintenance replacement
• Compact integrated structure, easy press-fit installation into housing, no extra assembling accessories required
• Standard P2 precision grade, customized tolerance available; stable mass production and sufficient spot stock, high cost performance for aftermarket repair and bulk OEM mechanical supporting orders

3. Applications

Automotive steering and suspension articulated linkages, hydraulic cylinder swing joint assemblies, agricultural machinery connecting rod hinge parts, small construction equipment misalignment rotary mechanisms, general industrial automation equipment swing bearings.

4. Technical Specifications

• Model: MBWTD18 Double-Sealed Self-Lubricating Wide Spherical Plain Bearing
• Structure: Integral spherical ball inner ring + wide outer ring + PTFE self-lubricating liner + double-side rubber dust seal
• Seal Type: Double-lip rubber sealed (D standard), open unsealed MBWT18 optional
• Material: Inner/outer ring: Stainless steel; Liner: PTFE composite self-lubricating material
• Internal Clearance: C0 standard, special clearance customizable
• Working Temperature Range: -40℃ ~ +120℃
• Precision Grade: P2 standard, P0 customizable
• Cross Reference: MBWTD18, NMB MBWT18

Dimension drawings and complete technical spec sheets can be offered on demand.

5. Why Choose GQZ Bearing

We are a professional manufacturer with over 25 years of experience specializing in MBWT series self-lubricating spherical plain bearings. All finished bearings pass heavy load compression test, reciprocating friction durability test and dust sealing aging test before delivery. Custom surface anti-rust treatment and special high-temperature liner modification services are available. We provide one-on-one professional technical guidance for bearing press-fit installation and fast formal quotation for all purchase requests. Stable mass production capacity supports long-term large aftermarket and OEM mechanical supporting orders, factory direct sales price, consistent stable quality and punctual batch delivery.

6. Quality Assurance

• Stainless steel raw material hardness and chemical composition incoming inspection
• Spherical ball and outer ring raceway precision grinding roughness detection
• Long-cycle reciprocating friction durability aging test for PTFE liner
• Double seal dust-proof & splash-water resistance simulation test
• Full dimensional tolerance sorting inspection
• 100% visual appearance and marking check before packaging
• Random sampling heavy load & temperature performance test before shipment
• All MBWTD18 bearings go through multi-process strict factory inspection.

7. CTA

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