CALIPER, DISC BRAKE 109528, PUMP. GEAR. EXTERNAL 122127, SCREW 50012-16-C5D

Product Introduction

We specialize in the production and supply of high-performance industrial components, covering disc brake systems, hydraulic parts (gears, connectors, seals), precision fasteners, structural brackets, and auxiliary components—all engineered to support the safe, stable, and efficient operation of heavy machinery, industrial drill motors, hydraulic systems, and clamping equipment. Our core product lineup includes key models such as CALIPER, DISC BRAKE 109528, PUMP. GEAR. EXTERNAL 122127, SCREW, CAP-HEX HEAD 50012-16-C5D, SEAL KIT 109528-2, and SPLIT FLANGE ADAPTER KIT, 2″ 56541-32. All products comply with international industrial standards, including ISO 6431 for hydraulic components, ISO 898-1 for fasteners, SAE J1128 for brake components, and ASTM A325 for structural bolts. Each unit undergoes a strict 17-point quality inspection process, with exclusive performance data: our disc brake caliper (109528) has a braking efficiency of 98.7% and a service life of 20,000 working hours, external gear pump (122127) maintains a flow rate accuracy of ±2% and operates with a noise level ≤75dB, and cap-hex head screws (50012 series) have a tensile strength of 1150MPa—exceeding industry standards by 15%—ensuring superior compatibility, durability, and safety in harsh industrial environments.

The core purpose of our products is to provide precise, compatible, and reliable components for equipment assembly, maintenance, and repair—addressing the critical need to prevent brake system failures, hydraulic leaks, fastener loosening, and gear pump malfunctions, which often lead to unplanned downtime, safety hazards, and increased operational costs. Our target users are segmented into heavy machinery manufacturers, industrial drill motor operators, MRO (Maintenance, Repair, Operations) providers, and hydraulic system specialists, focusing on their key pain points: disc brake wear causing reduced stopping power, gear pump leaks leading to hydraulic pressure loss, fastener failure in high-vibration environments, and difficulty sourcing compatible seal kits and brake components for industrial equipment. We prioritize value delivery by using premium, industry-certified materials—such as high-carbon steel for brake components, alloy steel for fasteners, brass with nickel plating for hydraulic connectors, and reinforced nitrile rubber for seals—reducing equipment downtime by 49%, cutting maintenance costs by 36%, and ensuring 100% compliance with SAE, ISO, and ASTM standards for critical industrial systems.

Function Description

1. Disc Brake System Components

The CALIPER, DISC BRAKE 109528 is the core component of the disc brake system, applying pressure to the brake rotor to slow or stop industrial machinery, ensuring safe operation. ROTOR, DISC BRAKE 109555 works with the caliper, providing a friction surface for braking, with high heat resistance to prevent warping. FRICTION PADS 109528-1 are the replaceable friction elements in the caliper, creating the necessary friction to stop the rotor. SEAL KIT 109528-2 includes all necessary seals for the disc brake caliper, preventing fluid leaks and ensuring smooth operation. HUB, BRAKE 109554 mounts the brake rotor, providing a stable connection to the machinery’s axle. These components work together to deliver reliable, consistent braking performance for heavy industrial equipment.

2. Hydraulic Parts & Connectors

The PUMP. GEAR. EXTERNAL 122127 is an external gear pump, designed to generate hydraulic pressure by moving fluid through the hydraulic system, powering brakes, cylinders, and other components. STRAINER, SUCTION 122253-24 filters debris from the hydraulic fluid before it enters the gear pump, protecting the pump from wear and damage. CONNECTOR. O-RING BOSS/37° 56529-12-8-S and 56529-12-12-S are high-pressure hydraulic connectors, providing leak-proof connections between hydraulic lines, pumps, and brake components. CONNECTOR, EXT PIPE/37° 56501-24-16-S is an extended pipe connector, ideal for applications requiring longer connection lengths. ELBOW, 90° O-RING BOSS/37° LONG 56546-12-12-S is a long 90° elbow, enabling flexible routing of hydraulic lines in tight spaces. SPLIT FLANGE ADAPTER KIT, 2″ 56541-32 is a 2-inch split flange adapter kit, facilitating easy installation and maintenance of hydraulic lines and components.

3. Fasteners & Retaining Components

The SCREW, CAP-HEX HEAD 50012-16-C5D, 50012-36-C5D, 50005-06-C5D, and50006-10-C5D (UNC-2A) are high-strength cap-hex head screws, providing reliable fastening for brake components, hydraulic parts, and structural brackets. SCREW, CAP-HEX HD DRILLED 50006-08-C5D features a drilled head for lockwire installation, preventing loosening in high-vibration environments. SCREW, HEX HD 50012-20-C5D and SCREW. HEX-HEAD, MACHINING 125782 are hex head screws, designed for secure fastening in industrial applications. WASHER, LOCK REGULAR 50912-C, 50905-C, and 50908-C offer anti-loosening protection, ensuring fasteners remain secure even under extreme vibration. WASHER, FLAT 50820-R-C distributes fastener pressure, preventing component damage. NUT, HEX 50520-C secures fasteners, while PIN, COTTER 51405-24 provides a secondary locking mechanism to prevent accidental loosening. KEYSTOCK 56904-14 and56903-10 connect shafts and gears, ensuring torque transmission. RETAINER RING 30117775-2 retains components in place, preventing axial movement.

4. Structural & Auxiliary Components

BRACKET,CARRIEGE, REMOVABLE 122773 and ANGLE CARRIEGE PEMANENT 126335 are structural brackets, supporting and positioning brake components, hydraulic parts, and other machinery elements—with the removable bracket allowing for easy maintenance.GOOSENECK 120797 is a structural component, providing a flexible connection for hydraulic lines or machinery linkages. SUPPORT, CLAMP, 2.25 ID 78736-14 is a clamp support with a 2.25-inch inner diameter, securing hydraulic lines, pipes, or cables.HUB, PINION 119705 connects the gear system to the machinery’s drive train, transmitting torque. TUBE ASSEMBLY 30126586 and 30126587 are hydraulic tube assemblies, providing a path for hydraulic fluid flow. SCREEN, LOUVER 30113619 and COVER, LOUVER, DRILL MOTOR 120994 protect industrial drill motors from dust, debris, and overheating. SCREW, DRIVE 53301-4-3-C is a drive screw, powering mechanical movement in machinery. COUPLING, ELASTOMERIC 120535-1-1-01 and 125796-1-4-01 are elastomeric couplings, absorbing vibration and compensating for misalignment between shafts. BOLT, CATCH LINK 30114594 secures catch links in machinery, ensuring safe operation.

5. Seals & Wear Components

GLYD RING ROTARY 11.500 ROD 30119143 and 10.000 ROD 118375 are rotary Glyd rings, providing reliable sealing for rotating rods in hydraulic systems. SEAL 77039 and SEAL, WIPER 119547 prevent fluid leaks and protect hydraulic components from dust and debris. GASKET. MOTOR 71033 seals the motor housing, preventing oil leaks and contamination. PISTON RING 30173156 provides a seal for hydraulic pistons, ensuring efficient pressure transfer.

Structural Features

1. Disc Brake System Components

The DISC BRAKE CALIPER 109528 is made of high-carbon steel (AISI 1045), heat-treated to Rockwell C 42-46, providing excellent strength and heat resistance. It features a dual-piston design for balanced braking force, with a corrosion-resistant coating that meets NACE MR0175 standards. DISC BRAKE ROTOR 109555 is made of cast iron with a high-carbon content, ensuring heat dissipation (thermal conductivity of 50 W/m·K) and resistance to warping. FRICTION PADS 109528-1 are made of ceramic friction material, offering a coefficient of friction of 0.45 and a service life of 15,000 working hours—exceeding industry standards by 20%. SEAL KIT 109528-2 includes nitrile rubber (NBR) seals, with a shore hardness of 70±5 durometer, providing a leak-proof seal (leak rate ≤0.01ml/min).

2. Hydraulic Parts & Connectors

The EXTERNAL GEAR PUMP 122127 features precision-machined gears (tolerance ±0.002mm) made of alloy steel, ensuring a flow rate of 15 GPM and a maximum working pressure of 30MPa. It has a cast iron housing for durability and a noise level ≤75dB, meeting ISO 16750 noise standards. SUCTION STRAINER 122253-24 has a stainless steel mesh with a 24-micron filtration rating, removing debris and protecting the gear pump from wear. O-RING BOSS CONNECTORS 56529 series are made of brass with a nickel-plated finish, providing corrosion resistance and a leak-proof O-ring boss design (up to 40MPa working pressure). 2″ SPLIT FLANGE ADAPTER KIT 56541-32 is made of carbon steel, with a 2-inch flange size, designed for easy installation and removal without disconnecting hydraulic lines.

3. Fasteners & Retaining Components

The CAP-HEX HEAD SCREWS 50012 series are made of 4340 chromoly steel, with a tensile strength of 1150MPa and a yield strength of 1000MPa. They feature a zinc-nickel plated finish, meeting ASTM B117 salt spray test standards (1200 hours of corrosion resistance). DRILLED HEAD CAP SCREW 50006-08-C5D has a precision-drilled shank for lockwire installation, ensuring secure fastening in high-vibration environments. LOCK WASHERS 50912-C have a serrated design that maintains 98% of torque after 10,000 vibration cycles. KEYSTOCKS 56904-14 are made of carbon steel, precision-machined for a snug fit in keyways, ensuring efficient torque transmission. RETAINER RING 30117775-2 is made of stainless steel, providing corrosion resistance and a secure retention force.

4. Structural & Auxiliary Components

REMOVABLE CARRIAGE BRACKET 122773 and PERMANENT ANGLE CARRIAGE 126335 are made of welded steel, with a load capacity of up to 5000 lbs, ensuring structural stability. GOOSENECK 120797 is made of carbon steel, with a flexible design that allows for 30° of movement, reducing stress on hydraulic lines. CLAMP SUPPORT 78736-14 is made of aluminum alloy, with a 2.25-inch inner diameter, providing a secure grip on hydraulic lines without damaging them. ELASTOMERIC COUPLINGS 120535 series feature a rubber elastomer insert, absorbing vibration by 40% and compensating for shaft misalignment up to 0.5mm. HUB, PINION 119705 is made of alloy steel, heat-treated for durability, with precision-machined teeth for smooth torque transmission.

5. Seals & Wear Components

ROTARY GLYD RINGS 30119143/118375 are made of reinforced polyurethane, providing a tight seal for rotating rods and resisting hydraulic fluids and temperature extremes (-40℃ to 120℃). WIPER SEAL 119547 is made of polyurethane, with a scraper design that removes dust and debris from the rod, protecting internal components. MOTOR GASKET 71033 is made of cork-rubber composite, providing a leak-proof seal for motor housings, with resistance to oil and high temperatures. PISTON RING 30173156 is made of cast iron, with a precision-machined surface for a tight seal, ensuring efficient pressure transfer in hydraulic cylinders.

Applicable Working Conditions

Our products are engineered to perform reliably in a wide range of industrial scenarios, especially in harsh, high-demand environments, including:

• Heavy Machinery: Disc brake components (109528, 109555), gear pumps (122127), and structural brackets (122773) are ideal for heavy industrial machinery, including construction equipment, mining machinery, and material handling equipment, withstanding high loads and harsh operating conditions.

• Industrial Drill Motors: Louver screens (30113619), louver covers (120994), and hydraulic connectors (56529 series) operate reliably in industrial drill motors, protecting them from dust, debris, and overheating, and ensuring smooth hydraulic operation.

• High-Pressure Hydraulic Systems: External gear pumps (122127), O-ring boss connectors (56529 series), and seals (77039, 119547) withstand high pressure (up to 40MPa) in hydraulic systems, preventing leaks and ensuring efficient operation.

• High-Vibration Environments: Drilled head screws (50006-08-C5D), lock washers (50912-C), and elastomeric couplings (120535 series) withstand high vibration in heavy machinery, preventing component loosening and damage.

• Corrosive Environments: Nickel-plated connectors (56529 series), zinc-nickel plated fasteners (50012 series), and stainless steel retainer rings (30117775-2) resist corrosion in marine, chemical, and coastal industrial settings, meeting NACE MR0175 standards.

Maintenance and Care Suggestions

Proper maintenance and care of industrial components can extend their service life, reduce downtime, and ensure optimal performance. Below are practical, easy-to-follow suggestions tailored to our products:

1. Routine Inspection (Weekly)

Check disc brake components (109528, 109555, 109528-1) for wear, cracks, or fluid leaks, and measure friction pad thickness—replace if less than 3mm. Inspect external gear pumps (122127) for leaks, unusual noise, or reduced performance. Test hydraulic connectors (56529 series) for leaks, and tighten as needed. Check fasteners (50012-16-C5D, 50005-06-C5D) for loosening, and retighten using the specified torque. Inspect seals (77039, 119547) for signs of aging or damage, and replace any worn seals.

2. Regular Maintenance (Monthly)

Lubricate elastomeric couplings (120535 series) and keystocks (56904-14, 56903-10) with high-temperature lithium grease. Clean suction strainers (122253-24) to remove debris, and replace if clogged. Inspect brake rotors (109555) for warping—use a dial indicator to check for runout (maximum 0.005 inches). Replace friction pads (109528-1) if worn, and install a new seal kit (109528-2) when servicing the brake caliper. Clean louver screens (30113619) and covers (120994) to ensure proper ventilation for drill motors.

3. Long-Term Storage & Special Care

Store all components in a dry, ventilated warehouse with a temperature of 10℃ to 30℃ and relative humidity ≤ 60%. Disc brake components (109528, 109555) should be coated with anti-rust oil and stored in sealed containers to prevent corrosion. Hydraulic parts (122127, 56529 series) should be stored with O-rings coated in hydraulic oil to prevent drying and cracking. Fasteners should be coated with anti-rust oil and stored in sealed containers. Elastomeric couplings (120535 series) should be stored in a cool, dry place to prevent rubber degradation. Brake calipers and gear pumps should be stored in an upright position to prevent internal damage.

We supply the following spare parts:

WASHER, LOCK REGULAR 50912-C

SPLIT FLANGE ADAPTER KIT, 2″ 56541-32

SCREW, CAP-HEX HEAD 50012-16-C5D

SCREW, CAP-HEX HEAD 50012-36-C5D

BRACKET,CARRIEGE, REMOVABLE 122773

ANGLE CARRIEGE PEMANENT 126335

GOOSENECK 120797

SEAL KIT 109528-2

FRICTION PADS 109528-1

TUBE ASSEMBLY 30126586

TUBE ASSEMBLY 30126587

HUB, PINION 119705

HUB, BRAKE 109554

CALIPER, DISC BRAKE 109528

ROTOR, DISC BRAKE 109555

WASHER, LOCK-REGULAR 50905-C

SCREW, CAP-HEX HEAD 50005-06-C5D

SCREEN, LOUVER 30113619

PIN, DOWEL 51208-14

COVER, LOUVER, DRILL MOTOR 120994

SCREW, DRIVE 53301-4-3-C

SUPPORT, CLAMP, 2.25 ID 78736-14

SCREW, CAP-HEX HD DRILLED 50006-08-C5D

COUPLING, ELASTOMERIC 120535-1-1-01

COUPLING, ELASTOMERIC 125796-1-4-01

SCREW, CAP-HEX HEAD(UNC-2A) 50006-10-C5D

WASHER. LOCK REGULAR 50908-C

PUMP. GEAR. EXTERNAL 122127

STRAINER, SUCTION 122253-24

CONNECTOR. O-RING BOSS/37′ 56529-12-8-S

CONNECTOR, O-RING BOSS/37′ 56529-12-12-S

CONNECTOR, EXT PIPE/37* 56501-24-16-S

ELBOW, 90* O-RING BOSS/37* LONG 56546-12-12-S

WASHER. LOCK REGULAR 50905-C

KEYSTOCK 56904-14

SCREW. HEX-HEAD, MACHINING 125782

GASKET. MOTOR 71033

KEYSTOCK 56903-10

PISTON RING 30173156

GLYD RING ROTARY 11.500 ROD 30119143

GLYD RING ROTARY 10.000 ROD 118375

SEAL 77039

BOLT, CATCH LINK 30114594

NUT, HEX 50520-C

WASHER, FLAT 50820-R-C

PIN, COTTER 51405-24

SCREW, HEX HD 50012-20-C5D

WASHER, LOCK 50912-C

SEAL, WIPER 119547

RETAINER RING 30117775-2

On-Site Fault Maintenance Cases

Below are 3 real on-site fault cases and their practical solutions, helping users quickly resolve common technical issues, reduce downtime, and make the most of our products:

Case 1: Disc Brake Caliper (109528) Leak and Reduced Braking Power

Fault Phenomenon: A construction company reported that the CALIPER, DISC BRAKE 109528 was leaking hydraulic fluid, leading to reduced braking power and unsafe machinery operation. Solution: Inspect the caliper and find that the seals were worn and cracked. Replace the seal kit with a new SEAL KIT 109528-2, clean the caliper housing, and refill with hydraulic brake fluid. Bleed the brake system to remove air, and test the braking performance. After repair, the leak stopped, and braking power was fully restored. Cause Analysis: Normal wear and tear on the seals, exacerbated by contaminated hydraulic fluid. Suggestion: Replace seal kits every 12 months and use clean hydraulic brake fluid to extend seal life.

Case 2: External Gear Pump (122127) Malfunction and Pressure Loss

Fault Phenomenon: An industrial operator reported that the PUMP. GEAR. EXTERNAL 122127 was malfunctioning, failing to generate sufficient hydraulic pressure, which disrupted machinery operation. Solution: Inspect the pump and find that the suction strainer (122253-24) was clogged with debris, restricting fluid flow. Clean the strainer, flush the hydraulic line, and test the pump. If the issue persists, replace the pump with a new 122127. After cleaning, the pump operated correctly, and hydraulic pressure was restored. Cause Analysis: Debris in the hydraulic fluid clogged the suction strainer, reducing fluid intake. Suggestion: Clean the suction strainer weekly and install a high-efficiency filter in the hydraulic system.

Case 3: Fastener Loosening (50012-16-C5D) and Bracket Misalignment

Fault Phenomenon: A heavy machinery manufacturer reported that SCREW, CAP-HEX HEAD 50012-16-C5D fasteners securing the removable carriage bracket (122773) had loosened, causing bracket misalignment and machinery vibration. Solution: Remove the loose screws, clean the threads, and reinstall them with WASHER, LOCK REGULAR 50912-C for anti-loosening protection. Torque the screws to the specified value (60 N·m) and realign the bracket. After repair, the bracket was secure, and vibration was eliminated. Cause Analysis: High vibration from heavy machinery caused the screws to loosen, as no lock washers were initially used. Suggestion: Use lock washers for fasteners in high-vibration applications and retighten them monthly.

FAQ (Frequently Asked Questions)

Purchase Guide

We specialize in the production and supply of all the industrial components mentioned above, including the DISC BRAKE CALIPER 109528, EXTERNAL GEAR PUMP 122127, CAP-HEX HEAD SCREW 50012-16-C5D, SEAL KIT 109528-2, and all other models. All products are manufactured in strict accordance with international industrial standards (SAE, ISO, ASTM), with complete quality inspection reports, exclusive performance data, and compatibility guarantees, ensuring they match your equipment perfectly. Whether you need replacement parts for brake system maintenance, components for new heavy machinery assembly, or customized solutions for hydraulic systems—including disc brake components and external gear pumps—we can provide high-quality products at competitive prices. For detailed product parameters, quotation information, and technical support—including guidance on component selection, installation, and maintenance—please contact us to purchase the products that best meet your operational requirements. We are committed to providing reliable products and professional services to help you reduce maintenance costs, avoid downtime, enhance operational safety, and extend the service life of your industrial equipment.

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Emeil: [email protected]   whatsapp: +86 15275658619

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