JQH Pneumatic Winch Spare Parts Catalog (JQH-5×48 Series, Serial No.91-111)

1

91

Stone pipe

-

Carbon steel Q355B + anti-rust coating

1. Corrosion from humid/dusty environments; 2. Impact damage during installation

1. Apply anti-corrosion paint annually; 2. Install with shock-absorbing pads and avoid direct impact

2

92/97

L Type Hose

6×350

Nitrile rubber (NBR) + steel wire reinforcement

1. Abrasion at bent positions; 2. Aging from long-term oil exposure

1. Use hose protectors at bends; 2. Ensure minimum bend radius ≥50mm, replace every 12 months

3

93/94

I Type Hose

6×230

Nitrile rubber (NBR) + steel wire reinforcement

1. Seal leakage at fittings; 2. Pressure fatigue from frequent pressure fluctuations

1. Secure fittings tightly and inspect weekly; 2. Stabilize working pressure at 0.4-0.6MPa

4

95/98/100

Hose

6×8000

Nitrile rubber (NBR) + multi-layer steel wire reinforcement

1. Wear from friction with ground/equipment; 2. Kinking damage during deployment

1. Lay with hose trays to avoid ground friction; 2. Avoid sharp bends and over-stretching

5

96

P Type Hose

6×310

Nitrile rubber (NBR) + steel wire reinforcement

1. External impact damage; 2. Rubber hardening from extreme temperatures

1. Install protective sleeves at exposed positions; 2. Operate within -10℃ to 80℃

6

101

I Type Hose

6×180

Nitrile rubber (NBR) + steel wire reinforcement

1. Wear from vibration; 2. Seal aging at both ends

1. Secure with anti-vibration clips; 2. Replace seals every 6 months

7

99

Three pipe

-

Stainless steel 304

1. Corrosion from chemical media; 2. Thread wear at connection points

1. Apply anti-corrosion grease to threads; 2. Use thread sealant for airtightness

8

103

Stainless steel pipe

φ16

Stainless steel 304

1. Scratch-induced corrosion; 2. Deformation from external force

1. Avoid scratching the surface during installation; 2. Use pipe benders for shaping

1

102

JKY-J-15 Right-angle pipe joints card sets

JKY-J-15

Brass + stainless steel clamp + NBR seal

1. Loosening from vibration; 2. Seal wear from frequent disassembly

1. Retorque clamps monthly; 2. Replace seals after 5 times of disassembly

2

104

JZY-Z15 Sleeve type pipe joint angle terminal

JZY-Z15

Brass + zinc plating + NBR seal

1. Thread corrosion; 2. Sleeve deformation from improper installation

1. Apply anti-rust oil to threads; 2. Use specialized tools for sleeve installation

3

108

JQH-5×48-0029d Tube coupling

-

Stainless steel 304 + NBR seal

1. Wear at coupling surface; 2. Leakage from seal aging

1. Apply anti-seize paste to coupling surface; 2. Replace seal every 6 months

4

111

Tube coupling

1〞-1/2〞

Brass + NBR seal

1. Thread wear from over-torque; 2. Seal swelling from incompatible oil

1. Torque to 35±5 N·m; 2. Use NBR-compatible pneumatic oil

5

105

JQH-5×48-0052d Electric connector

-

Copper alloy + plastic insulation

1. Corrosion from moisture; 2. Contact poor from dust accumulation

1. Install waterproof cover; 2. Clean contact points monthly with alcohol

1

106

Three five-way valve

4A430C-15

Brass + plastic valve core + NBR seal

1. Clogging from air impurities; 2. Seal wear from frequent switching

1. Install 5μm air filter regulator; 2. Clean valve core every 3 months

2

109

Control valve

QDH-8

Stainless steel 304 + NBR seal

1. Internal wear from high-pressure air; 2. Handle damage from impact

1. Do not exceed 1.0MPa working pressure; 2. Install protective cover for the handle

3

110

Distributing valve

JQH-5×48-0025d

Brass + NBR seal

1. Wear from valve core rotation; 2. Leakage from seal aging

1. Apply lubricating oil to valve core monthly; 2. Replace seal every 6 months

4

107

Bolt

M4×45

GB/T5783-2000; Carbon steel 45# + zinc plating

1. Loosening from vibration; 2. Corrosion from moisture

1. Use nylon insert lock nuts; 2. Torque to 5±1 N·m and retorque monthly

How to maintain long-length hoses (6×8000) to avoid damage?

Lay with hose trays to prevent ground friction and kinking. Inspect weekly for abrasion and cuts, and use protective sleeves at contact points. Replace every 12 months or if reinforcement layer is exposed.

What precautions should be taken for pipe joint installation?

Ensure threads are clean and apply thread sealant/anti-seize paste. Torque per specifications (30-35 N·m for brass joints) and use anti-vibration clips. Retorque monthly and replace seals every 6 months.

How to prevent pneumatic valve clogging?

Install a 5μm air filter regulator and air dryer to remove impurities and moisture. Clean valve cores every 3 months with diesel, and add pneumatic lubricating oil monthly to reduce internal wear.