130UZS91 Reducer Bearing Eccentric Roller Bearing For Gearbox 130UZS91V 130x220x42mm

1. Product Overview

130UZS91 and 130UZS91V are heavy-duty integral spherical plain bearings with unified inner and outer ring dimensions, specially designed for hydraulic cylinder joint, engineering swing arm and heavy load hinged transmission positions of excavators, loaders and large mining equipment.

Model difference explanation: 130UZS91 is standard open type spherical plain bearing; 130UZS91V adds built-in oil storage groove and side grease injection hole structure, convenient regular supplementary lubrication for long-time continuous heavy load operation.

This bearing consists of precision outer spherical inner ring and inner spherical outer ring, which can realize multi-angle self-aligning swing compensation, effectively eliminate assembly offset and shaft deflection deformation under heavy load. All inner and outer rings adopt fully quenched GCr15 bearing steel, the inner spherical contact surface is equipped with self-lubricating composite lining, low friction coefficient and stable wear resistance under frequent reciprocating swing and alternating impact load. Compact integral structure without split assembly, high overall structural rigidity, not easy to crack under overload pressure. Widely matched main hydraulic cylinder hinge joints, large swing arm connecting parts and heavy hinged support positions of construction and mining machinery.

2. Technical Specifications

3. Core Advantages

1. Two structural versions for targeted selection: standard 130UZS91 for low-frequency swing short-cycle equipment; lubricating hole upgraded 130UZS91V for all-day continuous heavy load hydraulic cylinder working conditions.
2. Double spherical matching self-aligning structure, automatically compensate installation error and axial deflection deformation, avoid local contact stress concentration caused by hinge offset.
3. Copper-based composite self-lubricating lining embedded on inner spherical surface, low friction, anti-seize, suitable for low-speed frequent reciprocating swing motion of hydraulic cylinder joints.
4. Integral one-piece forging inner and outer rings, overall quenching hardness up to HRC60–65, strong anti-overload impact performance, resistant to instantaneous hydraulic pressure surge of engineering equipment.
5. 130UZS91V built-in oil storage channel and independent grease nipple, lubricating grease evenly covers spherical contact surface after filling, greatly reduce lining dry friction wear.
6. Ultra-precision spherical grinding contact surface, uniform stress distribution, no local indentation or peeling after long-time heavy load swing operation.
7. Unified universal installation dimension, fully interchangeable with global UZS series heavy spherical plain bearings, no modification to hydraulic cylinder hinge base during spare parts replacement.
8. Comprehensive customized service: P5 high precision upgrade, stainless steel anti-rust surface treatment, OEM laser marking on outer ring surface, neutral export wooden case anti-rust packaging, high-temperature extreme pressure lithium grease pre-filling.

4. Application Scenarios

130UZS91 / 130UZS91V heavy integral spherical plain bearings are core self-aligning heavy load hinge spare parts for construction and mining hydraulic equipment:

• Excavator boom, arm, bucket main hydraulic cylinder hinge joint bearing assemblies
• Large loader, bulldozer lifting cylinder, steering cylinder heavy hinged matching units
• Underground mining dump truck hydraulic push cylinder, large engineering machinery swing arm support positions
• Metallurgical heavy swing transmission equipment, large hydraulic press hinged connecting components
• Port heavy lifting machinery hydraulic telescopic cylinder, agricultural large harvester hinge bearings

Aftermarket interchangeable UZS series heavy-duty self-aligning spherical plain bearing set

Cost-effective anti-impact wear-resistant hinge bearing solution for hydraulic cylinder manufacturers, construction machinery OEM and mining equipment maintenance factories bulk procurement.

5. Why Choose GQZ Bearing

1. 25 years professional manufacturing experience of UZS series heavy integral spherical plain bearings including 130UZS91 and 130UZS91V
2. Both versions fully dimensionally interchangeable with international standard heavy spherical plain bearings, consistent swing load rating, self-aligning tolerance and lining wear resistance standards.
3. Complete OEM & ODM customization service supporting P5 precision grade and special high temperature resistant grease filling.
4. Strict full pre-delivery inspection flow: GCr15 raw material metallographic & hardness test, spherical surface dimensional sorting screening, long-cycle reciprocating swing alternating impact aging test, continuous heavy load lining friction wear simulation test.
5. Professional spherical plain bearing engineering team provides one-on-one hinge composite load calculation, hydraulic cylinder matching selection and cylinder base installation technical guidance within 24 working hours.
6. Stable large-scale mass production workshop with competitive factory direct bulk wholesale price for mixed batch orders of two versions, long-term stable supply for global construction, mining hydraulic spare parts buyers.

We specialize in integral spherical self-aligning structure, self-lubricating wear-resistant lining design, unified interchangeable mounting dimension standard and long-term win-win cooperation with heavy hydraulic transmission equipment suppliers.

6. Quality Control

1. Raw material chemical composition, internal flaw and hardness inspection for GCr15 bearing steel inner and outer ring blanks
2. Precision integral forging, multiple tempering stress relief, multi-step ultra-precision spherical surface grinding process for inner and outer rings
3. Copper-based self-lubricating lining hot pressing and composite bonding production line, strictly control lining bonding tightness and surface uniformity
4. 130UZS91V oil hole precision drilling, internal oil storage tank deburring and grease nipple thread tapping assembly process
5. Targeted classified performance testing: Separate long-cycle reciprocating swing aging test for 130UZS91 maintenance-free type and 130UZS91V lubricating hole type, repeated hydraulic cylinder impact fatigue test, high-temperature grease long-cycle wear detection
6. Full dimensional tolerance, spherical surface crack and roughness recheck before anti-rust oil coating and export wooden case moisture-proof packaging shipment

Every production batch of 130UZS91 and 130UZS91V bearings undergoes full sampling hydraulic cylinder hinge reciprocating swing simulation test to guarantee stable long-term heavy impact self-aligning wear-resistant support performance in construction and mining hydraulic machinery equipment.

7. Get A Quote Now

If you need 130UZS91 standard and 130UZS91V lubricating hole heavy spherical plain bearings for hydraulic cylinder manufacturing, construction machinery assembly and mining equipment maintenance bulk matching, send your purchase inquiry directly.

You will receive full professional supporting services after submitting inquiry:

• Fast official factory sealed formal quotation reply within 24 working hours
• One-on-one hydraulic cylinder hinge load calculation, two-version model selection guidance and cylinder base press-fit installation technical guidance from professional spherical plain bearing engineers
• Customized bearing performance solutions including P5 high precision upgrade and high-temperature resistant grease options
• Competitive direct factory bulk wholesale price for mixed batch delivery of 130UZS91 and 130UZS91V

Provide your required purchase quantity, hydraulic cylinder swing frequency and continuous heavy impact operating environment to obtain detailed formal quotation document.

8. FAQ

1. Q1: What is the difference between 130UZS91 and 130UZS91V?
   A1: The overall installation size is completely consistent; 130UZS91 is standard open type without oil hole, suitable for low-frequency swing short-cycle equipment; 130UZS91V is upgraded with grease injection hole and internal oil storage tank, convenient regular lubrication for all-day continuous working hydraulic cylinders.
2. Q2: What is the core function of spherical plain bearing?
   A2: Rely on inner and outer spherical matching to realize multi-angle self-aligning swing, compensate assembly deflection and offset, bear large radial and bidirectional hinge impact load for hydraulic cylinder joints.
3. Q3: Can 130UZS91V replace 130UZS91 directly?
   A3: The outline size is fully interchangeable and can be used for replacement; it is recommended to select according to the equipment daily continuous operation time and lubrication maintenance cycle.