Auxiliary Brake System Z03280000003AA Parts Specification for SJ Petro ZJ40 Drawworks

1

Z03280000003AA

Auxiliary brake system

1. Brake failure from worn friction components; 2. Oil leakage from damaged seals/gaskets; 3. Overheating caused by poor heat dissipation or insufficient cooling water.

1. Inspect braking performance weekly and replace worn parts promptly; 2. Check for oil leaks daily and maintain cooling water circulation; 3. Clean heat dissipation components monthly to avoid overheating.

Integrated assembly with Q355B low-alloy steel frame; compatible with ZJ40 drawworks; meets API 7K braking safety standards; designed for heavy-load oilfield drilling operation.

2

5402650014

WCB324 water cooled brake

1. Friction surface wear from long-term braking; 2. Corrosion from poor-quality cooling water; 3. Seal damage leading to water or oil leakage.

1. Use clean, softened cooling water to reduce corrosion; 2. Inspect friction surface thickness monthly (replace if ≤5mm); 3. Check seals regularly and replace if cracked or aged.

HT300 cast iron friction surface; WCB carbon steel body; water-cooled structure for efficient heat dissipation; rated braking torque compliant with API 7K requirements.

1

Z03280200002AA

Support, box body

1. Structural deformation from drilling rig vibration and impact; 2. External corrosion from oilfield mud and moisture; 3. Wear at connection points from long-term load-bearing.

1. Inspect for deformation and cracks quarterly; 2. Clean external surfaces regularly and apply anti-corrosion paint annually; 3. Retighten connection fasteners monthly to reduce load stress.

Q355B low-alloy steel; precision-welded structure; internal anti-rust coating; designed to fit Z03280000003AA system and ZJ40 drawworks installation dimensions.

2

P0100785AA

Guard cover

1. Impact damage from falling debris in drilling sites; 2. Corrosion from rainwater and oilfield contaminants; 3. Wear at fixed points from vibration.

1. Inspect for cracks and deformation weekly; 2. Clean and wipe dry after drilling operations; 3. Replace if impact damage affects structural integrity.

Q235B carbon steel; 3mm thickness; external anti-corrosion spray coating; designed to protect internal brake components from debris and contaminants.

1

Z03280100002AA

Spoke, sprocket wheel

1. Tooth wear from chain friction and torque transmission; 2. Fatigue cracking from repeated torque changes; 3. Corrosion from oil and moisture.

1. Lubricate chain and sprocket teeth weekly; 2. Inspect for tooth wear (replace if wear exceeds 0.5mm); 3. Check for cracks quarterly and replace if found.

40Cr alloy steel; heat-treated for hardness (HRC 28-32); precision-machined teeth; compatible with ZJ40 drawworks transmission chain.

2

P3000047AA

Sprocket wheel

1. Abrasive wear from contaminated lubricant; 2. Tooth deformation from excessive torque; 3. Wear at shaft connection points from vibration.

1. Use clean, high-temperature resistant lubricant; 2. Avoid overloading the brake system to prevent excessive torque; 3. Inspect shaft connection tightness monthly.

45# carbon steel; surface carburizing treatment; tooth profile optimized for smooth transmission; fits Z03280000003AA system transmission structure.

3

P2400941AA

Shaft

1. Fatigue deformation from long-term torque and vibration; 2. Wear at bearing connection points; 3. Corrosion from internal oil leakage.

1. Inspect shaft straightness quarterly (replace if deviation exceeds 0.1mm); 2. Lubricate bearing connection points weekly; 3. Check for oil leaks to avoid internal corrosion.

40CrNiMoA alloy steel; heat-treated for toughness and wear resistance; precision-ground surface; complies with GB/T 3077-2015 standards for transmission shafts.

4

P5400030AA

Key B36X300

1. Shear damage from excessive torque; 2. Wear at contact surfaces with shaft and sprocket; 3. Deformation from improper installation.

1. Ensure proper fit during installation (no loose or tight fit); 2. Avoid sudden braking to prevent excessive torque; 3. Inspect for wear and deformation monthly.

45# carbon steel; precision-machined to GB/T 1096-2003 standards; size B36X300; designed to transmit torque between shaft and sprocket.

5

P5400108AA

Key

1. Wear from repeated assembly and disassembly; 2. Shear failure from torque overload; 3. Corrosion from oil and moisture in the system.

1. Install and remove carefully to avoid damage; 2. Replace if wear or deformation is detected; 3. Apply anti-corrosion grease during installation.

45# carbon steel; heat-treated for strength; precision-machined to fit shaft and component keyways; compatible with Z03280000003AA system components.

6

P3000007AA

Connection gear

1. Gear tooth wear from meshing friction; 2. Fatigue cracking from repeated torque impact; 3. Corrosion from oil contamination.

1. Lubricate gear meshing surfaces daily; 2. Inspect for tooth wear and cracks monthly; 3. Replace lubricant every 500 working hours to avoid contamination.

20CrMnTi alloy steel; carburizing and quenching treatment; gear teeth precision-ground; fits Z03280000003AA system transmission ratio.

1

P1700306AA

Oil seal seat

1. Wear from oil seal friction; 2. Corrosion from oil and moisture; 3. Deformation from improper installation or vibration.

1. Install oil seal seat smoothly to avoid deformation; 2. Clean contact surfaces before installing the oil seal; 3. Replace if wear or corrosion affects sealing performance.

H62 brass; precision-machined contact surfaces; anti-corrosion and wear-resistant; designed to fit oil seal PG140×170×16.

2

5300200121

Oil seal PG140×170×16

1. Wear and aging from long-term high-temperature operation; 2. Damage from contaminated oil; 3. Deformation from improper installation.

1. Replace every 6 months or during oil changes; 2. Use clean lubricant to avoid contaminant damage; 3. Install with a press tool to avoid lip deformation.

Nitrile rubber (NBR) seal lip; steel skeleton; size PG140×170×16; heat-resistant up to 120℃; oil-resistant and wear-resistant.

3

4500100348

Bearing 23024

1. Wear from contaminated lubricant; 2. Overheating damage from poor lubrication; 3. Fatigue failure from long-term load-bearing and vibration.

1. Use high-quality lithium-based grease for lubrication; 2. Inspect bearing temperature during operation (replace if >80℃); 3. Clean bearing seats before installation.

GCr15 bearing steel; double-row spherical roller bearing; model 23024; complies with GB/T 307-2015; rated dynamic load suitable for ZJ40 drawworks.

4

P1400779AA

Spacer III

1. Wear at contact surfaces with bearings and shafts; 2. Deformation from installation pressure; 3. Corrosion from oil leakage.

1. Ensure proper installation torque to avoid deformation; 2. Clean contact surfaces before installation; 3. Inspect for wear and corrosion during maintenance.

45# carbon steel; precision-machined to ensure dimensional accuracy; surface anti-rust treatment; fits Z03280000003AA system bearing position.

5

P1100612AA

SpacerⅡ

1. Abrasive wear from contaminated oil; 2. Wear from bearing rotation; 3. Deformation from long-term load stress.

1. Replace lubricant regularly to avoid contamination; 2. Inspect for dimensional deviation during maintenance; 3. Replace if wear affects bearing position accuracy.

45# carbon steel; heat-treated for wear resistance; precision-ground surfaces; designed to adjust bearing clearance in the auxiliary brake system.

6

P1100609AA

SpacerⅠ

1. Wear at connection points with transmission components; 2. Corrosion from oil and moisture; 3. Damage from improper disassembly.

1. Disassemble carefully using proper tools; 2. Clean and apply anti-corrosion grease after disassembly; 3. Inspect for cracks and deformation before reinstallation.

45# carbon steel; surface galvanized for anti-corrosion; precision-machined to fit Z03280000003AA system component positions.

7

P0000200AA

Gland, bearing

1. Wear from bearing rotation; 2. Corrosion from oil leakage; 3. Deformation from over-tightening during installation.

1. Tighten to specified torque (25-30 N·m) during installation; 2. Check for oil leaks regularly; 3. Replace if wear or deformation affects bearing protection.

Q235B carbon steel; precision-machined contact surfaces; anti-rust coating; designed to fix and protect bearing 23024.

8

P0200064AA

Press plate, bearing

1. Wear at contact surfaces with bearings; 2. Deformation from installation pressure; 3. Corrosion from oil and moisture.

1. Install evenly to avoid uneven pressure; 2. Clean contact surfaces before installation; 3. Inspect for deformation and corrosion during maintenance.

45# carbon steel; heat-treated for rigidity; precision-machined to ensure flatness; used to fix bearings in the auxiliary brake system.

9

P0100441AA

Press plate

1. Wear from long-term contact with components; 2. Deformation from torque and vibration; 3. Corrosion from oilfield contaminants.

1. Inspect for flatness quarterly; 2. Retighten connection fasteners monthly; 3. Clean and apply anti-corrosion grease regularly.

Q235B carbon steel; 5mm thickness; surface anti-corrosion treatment; designed to compress and fix components in the Z03280000003AA system.

1

4313100008

Spring washer 8

1. Fatigue failure from repeated vibration; 2. Deformation from over-tightening; 3. Corrosion from oil and moisture.

1. Replace after each disassembly; 2. Use a torque wrench to avoid over-tightening; 3. Store in a dry environment when not in use.

65Mn spring steel; size 8; complies with GB/T 93-1987; heat-treated for elasticity; used to prevent bolt loosening.

2

4300308025

Bolt M8X25

1. Thread wear from repeated assembly and disassembly; 2. Fatigue fracture from vibration; 3. Corrosion from oilfield contaminants.

1. Tighten to 12-15 N·m torque; 2. Apply anti-corrosion grease to threads; 3. Replace after 3-5 disassembly cycles.

8.8-grade carbon steel; zinc plating for anti-corrosion; thread size M8X25; complies with GB/T 3098.1-2010.

3

4300822070

Bolt M22X70

1. Thread deformation from over-tightening; 2. Fatigue fracture from heavy-load vibration; 3. Corrosion from mud and moisture.

1. Use a torque wrench (80-85 N·m); 2. Clean threads before installation; 3. Inspect for cracks quarterly.

10.9-grade alloy steel; galvanized; thread size M22X70; high strength for securing heavy components like sprocket wheels.

4

4313100022

Washer 22

1. Wear from bolt tightening pressure; 2. Corrosion from external contaminants; 3. Deformation from uneven pressure.

1. Replace if deformed or corroded; 2. Ensure proper alignment with bolts during installation; 3. Use with matching M22 bolts.

Q235B carbon steel; size 22; surface galvanized; complies with GB/T 97.1-2002; distributes bolt pressure evenly.

5

4309300022

Nut M22

1. Thread wear from friction with bolts; 2. Vibration-induced loosening; 3. Corrosion from oil and moisture.

1. Retighten after 100 working hours; 2. Pair with spring washers to prevent loosening; 3. Replace if threads are stripped.

8-grade carbon steel; zinc plating; thread size M22; complies with GB/T 6170-2015; compatible with M22X70 bolts.

6

4300830080

Bolt M30x80

1. Fatigue failure from high torque and vibration; 2. Thread damage from over-tightening; 3. Corrosion from oilfield environments.

1. Tighten to 150-155 N·m torque; 2. Apply anti-corrosion thread sealant; 3. Inspect for thread damage before reuse.

10.9-grade alloy steel; galvanized; thread size M30x80; high strength for securing connection gears and heavy components.

7

4313100030

Spring washer 30

1. Fatigue deformation from repeated vibration; 2. Breakage from over-tightening; 3. Corrosion from moisture and oil.

1. Replace after each disassembly; 2. Use with matching M30 bolts; 3. Avoid over-compression during installation.

65Mn spring steel; size 30; complies with GB/T 93-1987; heat-treated for elasticity; prevents M30 bolt loosening.

8

4309300030

Nut M30

1. Thread wear from repeated use; 2. Vibration-induced loosening; 3. Deformation from uneven torque.

1. Use a torque wrench to apply uniform torque; 2. Pair with spring washer 30; 3. Replace if internal threads are damaged.

8-grade carbon steel; zinc plating; thread size M30; complies with GB/T 6170-2015; compatible with M30x80 bolts.

9

4320100016

Standard type spring washer

1. Fatigue failure from long-term vibration; 2. Corrosion from oil and moisture; 3. Deformation from improper use.

1. Select matching size with bolts; 2. Replace if deformed or rusted; 3. Install correctly (curved side towards the nut).

65Mn spring steel; standard type; complies with GB/T 93-1987; anti-corrosion surface treatment; used for general fastening in the system.

10

4300816065

Bolt M16X65

1. Thread wear from assembly and disassembly; 2. Corrosion from oilfield contaminants; 3. Fatigue fracture from vibration.

1. Tighten to 45-50 N·m torque; 2. Apply anti-corrosion grease; 3. Inspect for cracks and wear monthly.

8.8-grade carbon steel; galvanized; thread size M16X65; complies with GB/T 3098.1-2010; used for securing guards and covers.

11

4101800008

Oil cup M10X1

1. Thread wear from repeated lubricant filling; 2. Corrosion from moisture; 3. Blockage from contaminated lubricant.

1. Use clean lubricant for filling; 2. Tighten gently after filling to avoid thread damage; 3. Clean the oil cup mouth monthly to prevent blockage.

H62 brass; thread size M10X1; precision-machined; corrosion-resistant; used for adding lubricant to bearings and moving parts.

12

4313100010

Washer 10

1. Wear from bolt pressure; 2. Corrosion from oil and moisture; 3. Deformation from over-tightening.

1. Replace if deformed or corroded; 2. Use with matching M10 bolts; 3. Ensure proper alignment during installation.

Q235B carbon steel; size 10; surface galvanized; complies with GB/T 97.1-2002; distributes bolt pressure to protect components.

13

P2200390AA

Bolt 3/8'-16UNC

1. Thread wear from assembly and disassembly; 2. Corrosion from oilfield environments; 3. Fatigue fracture from vibration.

1. Tighten to 20-25 N·m torque; 2. Apply anti-corrosion thread sealant; 3. Inspect for thread damage before reuse.

8.8-grade carbon steel; zinc plating; thread size 3/8'-16UNC (imperial); compatible with Z03280000003AA system imperial-thread components.

What lubricant is suitable for the Z03280000003AA auxiliary brake system?

High-temperature resistant lithium-based grease (NLGI Grade 2) is recommended, which resists temperatures up to 120℃ and is compatible with oil seals and bearings. For gear and transmission components, use ISO VG 68 industrial gear oil (API GL-4 compliant). Replace lubricant every 500 working hours to avoid contamination.

How to maintain the WCB324 water cooled brake to extend its service life?

First, use clean, softened cooling water to prevent internal corrosion. Second, inspect the friction surface monthly and replace if wear exceeds 0.5mm. Third, check cooling water circulation daily to avoid overheating. Finally, clean the heat dissipation channels monthly to ensure efficient heat dissipation, complying with API 7K maintenance guidelines.

What should I do if the auxiliary brake system has insufficient braking force?

First, check for oil leaks and replace worn seals/gaskets. Second, inspect the WCB324 brake’s friction surface for wear and replace if needed. Third, check the transmission components (sprocket, gear) for wear or loosening and retighten or replace. Finally, ensure the cooling system works normally to avoid brake overheating, which reduces braking force.