FFH75×500Z Diverter Hinge & Fastener Spare Parts

1

CH970301-01010100

Hinge ring

29 1/2-22

Forged steel 42CrMo + carburizing

1. Abrasive wear from particle intrusion; 2. Fatigue cracking from repeated rotation

1. Clean raceway weekly to remove debris; 2. Inspect for cracks per GB/T 11345 ultrasonic standard

2

CH970301-0101010001

Right hinge ring

29 1/2-22

Forged steel 42CrMo + carburizing

1. Uneven load distribution; 2. Corrosion in humid environments

1. Ensure axial clearance ≤0.15mm; 2. Apply anti-corrosion grease every 3 months

3

CH970301-0101010002

Left hinge ring

29 1/2-22

Forged steel 42CrMo + carburizing

1. Misalignment-induced friction; 2. Thermal expansion damage

1. Align per ISO 9283 precision standard; 2. Avoid rapid temperature changes (>8℃/min)

4

CH970301-01020100

Hinge ring

29 1/2-22

Forged steel 42CrMo + carburizing

1. Overload stress; 2. Wear from insufficient lubrication

1. Do not exceed rated load (50kN); 2. Lubricate with lithium-based grease (NLGI 2) monthly

1

CH970301-010103

Hinge block

Alloy steel 35CrMo + zinc plating

1. Impact damage during assembly; 2. Thread wear from repeated disassembly

1. Use torque wrench for installation (45±5 N·m); 2. Replace after 5 disassembly cycles

2

CH970301-010104

Connect block

Carbon steel Q355B + epoxy coating

1. Corrosion from chemical exposure; 2. Bending from misalignment

1. Test pH of working environment (6-9 recommended); 2. Check flatness monthly (tolerance ≤0.2mm/m)

3

CH970301-0101010003

Limit block

Polyurethane (Shore A 90) + steel core

1. Aging from UV exposure; 2. Over-compression impact

1. Shield from direct sunlight; 2. Ensure compression stroke ≤20% of total height

4

CH970301-01010203

Down hinge block

Alloy steel 35CrMo + zinc plating

1. Fatigue from vertical load; 2. Galling between metal surfaces

1. Apply anti-seize compound to contact areas; 2. Inspect for deformation every 6 months

5

CH970301-01010204

Down connect block

Carbon steel Q355B + epoxy coating

1. Wear from vibration; 2. Coating peeling

1. Use lock washers to reduce vibration; 2. Touch up coating scratches within 24 hours

1

CH970301-0101020100

Support part I

Stainless steel 304

1. Pitting corrosion; 2. Impact damage

1. Clean with passivating agent quarterly; 2. Avoid contact with sharp tools during maintenance

2

CH970301-0101020200

Support part II

Stainless steel 304

1. Thermal stress cracking; 2. Corrosion from chloride

1. Operate within -20℃ to 120℃; 2. Control chloride content <20ppm in environment

3

CH970301-0102010100

Support iron core I

Cast iron HT250 + anti-rust paint

1. Rust from moisture; 2. Cracking from thermal shock

1. Store in dry environment (humidity <60%); 2. Avoid sudden temperature spikes

4

CH970301-0102010200

Support iron core II

Cast iron HT250 + anti-rust paint

1. Wear from friction; 2. Paint peeling

1. Apply lubricating oil to contact surfaces; 2. Re-paint every 12 months

5

CH970301-0102010001

Rubber core

Nitrile rubber (NBR 70)

1. Chemical swelling; 2. Aging from oxidation

1. Avoid contact with mineral oils above 100℃; 2. Replace every 8 months of continuous use

1

CH970301-01010200

29 1/2-22 seal

29 1/2-22

FKM (Viton) + steel reinforcement

1. Dry running friction; 2. Shaft surface scratches

1. Ensure initial lubrication before operation; 2. Polish shaft scratches >0.2mm with 400-grit sandpaper

2

CH970301-0101020001

Seal

-

EPDM rubber

1. Ozone degradation; 2. Compression set

1. Store in ozone-free environment; 2. Replace after 6 months of continuous compression

3

CH970301-01010100

29 1/2-22 seal

29 1/2-22

FKM (Viton) + steel reinforcement

1. Over-compression; 2. Chemical corrosion

1. Control compression ratio (15-20%); 2. Use compatible fluids per FKM material guidelines

1

CH970301-010105

Hinge bolt

-

-

Alloy steel 42CrMo

1. Fatigue fracture; 2. Thread galling

1. Torque to 120±10 N·m; 2. Apply anti-galling paste to threads

2

420201011120055000

Bolt M20×55

M20×55

GB/T5782

Carbon steel Q355

1. Vibration-induced loosening; 2. Corrosion

1. Use nylon lock nuts; 2. Apply zinc-rich paint for outdoor use

3

420503015201600000

Spring washer 20

Size 20

GB/T93

Spring steel 65Mn

1. Loss of elasticity; 2. Cracking

1. Replace after 2 disassembly cycles; 2. Avoid over-torque

4

420101121116009000

Screw M16×90

M16×90

GB/T70.1

Stainless steel 304

1. Cross-threading; 2. Corrosion in humid areas

1. Use matching hex key; 2. Tighten to 60±5 N·m

5

42010112111600900

Screw M16×90

M16×90

GB/T70.1

Stainless steel 304

1. Thermal expansion loosening; 2. Thread wear

1. Allow thermal expansion gap; 2. Inspect threads before installation

6

420503015201600000

Screw M5×15

M5×15

GB/T70.1

Stainless steel 304

1. Over-torque damage; 2. Corrosion

1. Torque to 2.5±0.3 N·m; 2. Use precision screwdriver

7

42020101111604000

Bolt M16×45

M16×45

GB/T5782

Carbon steel 45#

1. Thread stripping; 2. Rust

1. Do not over-tighten (max 50 N·m); 2. Apply anti-rust oil monthly

8

420503015161600000

Grower washer 16

Size 16

GB/T93

Spring steel 65Mn

1. Deformation; 2. Corrosion

1. Match with M16 bolts only; 2. Replace if deflection >1mm

9

420503015201600000

Grower washer 20

Size 20

GB/T93

Spring steel 65Mn

1. Fatigue deformation; 2. Galling

1. Clean contact surfaces before installation; 2. Use with compatible bolts to avoid galvanic corrosion

How often should hinge rings be inspected for cracks?

Inspect via ultrasonic testing per GB/T 11345 every 6 months. For high-vibration environments, shorten to 3 months. Replace immediately if cracks are detected.

What lubricant is suitable for hinge blocks?

Use lithium-based grease (NLGI 2) for general conditions. For high-temperature (>100℃) environments, choose high-temperature synthetic grease (operating temp -40℃ to 180℃).

Can stainless steel fasteners be used in corrosive environments?

Stainless steel 304 fasteners are suitable for mild corrosion. For strong corrosion (e.g., coastal areas), upgrade to 316 stainless steel to prevent pitting corrosion.