FFH75×500Z Diverter Hinge, Seal & Fastener

1

CH970301-01030100

Hinge ring

22-10

Forged steel 42CrMo + carburizing

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

1. Clean raceway weekly with high-pressure air; 2. Inspect for cracks via GB/T 11345 ultrasonic testing

2

CH970301-0103010001

Right hinge ring

-

Forged steel 42CrMo + carburizing

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

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

3

CH970301-0103010002

Left hinge ring

-

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

CH970301-01040200

Hinge ring

17 3/4-10

Forged steel 42CrMo + carburizing

1. Overload stress; 2. Insufficient lubrication

1. Do not exceed rated load (40kN); 2. Lubricate with lithium-based grease monthly

5

CH970301-0104020001

Right hinge ring

-

Forged steel 42CrMo + carburizing

1. Thread galling; 2. Impact damage during installation

1. Apply anti-galling paste to mating surfaces; 2. Use soft tools for installation

6

CH970301-0104020002

Left hinge ring

-

Forged steel 42CrMo + carburizing

1. Oxidation; 2. Vibration-induced wear

1. Apply anti-oxidation coating annually; 2. Use vibration-damping washers

1

CH970301-010303

Hinge block

Alloy steel 35CrMo + zinc plating

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

1. Torque to 45±5 N·m with torque wrench; 2. Replace after 5 disassembly cycles

2

CH970301-010304

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

CH970301-0103020100

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

4

CH970301-0103020200

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

5

CH970301-010403

Hinge block

Alloy steel 35CrMo + zinc plating

1. Abrasive wear; 2. Corrosion in wet conditions

1. Clean with neutral detergent weekly; 2. Dry thoroughly after cleaning

6

CH970301-010404

Connect block

Carbon steel Q355B + epoxy coating

1. Thermal stress cracking; 2. Rust from moisture

1. Operate within -20℃ to 120℃; 2. Store in dry environment (humidity<60%)

7

CH970301-0104010001

Lower hinge block

Alloy steel 35CrMo + zinc plating

1. Over-compression; 2. Thread damage

1. Ensure compression stroke ≤15% of total height; 2. Inspect threads before installation

8

420201011116045000

Hinge block

Alloy steel 35CrMo + zinc plating

1. Batch fatigue; 2. Galvanic corrosion

1. Replace in sets to ensure uniform load; 2. Avoid mixing with dissimilar metals

9

420503015161600000

Connect block

Carbon steel Q355B + epoxy coating

1. Collective wear; 2. Coating degradation

1. Inspect all blocks simultaneously; 2. Re-coat every 12 months

1

CH970301-0103010003

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

2

CH970301-0104010100

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

3

CH970301-0104010200

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

4

CH970301-0104020003

Limit block

Polyurethane (Shore A 90) + steel core

1. Chemical swelling; 2. Mechanical wear

1. Avoid contact with organic solvents; 2. Replace every 8 months of continuous use

1

CH970301-01030200

22-10 seal

22-10

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

CH970301-010303

Seal

-

EPDM rubber

1. Ozone degradation; 2. Compression set

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

3

CH970301-01040100

17 3/4-10 seal

17 3/4-10

FKM (Viton) + steel reinforcement

1. Over-compression; 2. Chemical corrosion

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

4

CH970301-040100

Seal support

-

Stainless steel 304 + rubber lining

1. Deformation from over-torque; 2. Corrosion

1. Torque to 30±3 N·m; 2. Clean with non-abrasive detergent

5

CH970301-040200

Packing unit

-

Graphite-impregnated PTFE

1. Dry running; 2. Wear from high speed

1. Maintain minimum lubrication; 2. Limit rotational speed ≤30 rpm

6

CH970301-0403

Rubber ring

854×φ7

Nitrile rubber (NBR 70)

1. Chemical swelling; 2. Thermal aging

1. Avoid contact with mineral oils above 100℃; 2. Replace every 6 months

1

CH970301-01010205

Down 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

420201011116045000

Bolt M16×45

M16×45

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

420503015161600000

Spring washer 16

Size 16

GB/T93

Spring steel 65Mn

1. Loss of elasticity; 2. Cracking

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

4

420101121116007000

Screw M16×70

M16×70

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

420101121105001000

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

6

CH970301-0103020001

Bolt M16×45

M16×45

-

Carbon steel Q355

1. Thread wear; 2. Impact damage

1. Inspect threads before installation; 2. Avoid direct impact

7

CH970301-01010205

Grower washer 16

Size 16

-

Spring steel 65Mn

1. Deformation; 2. Corrosion

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

8

420201011116050000

Bolt M16×50

M16×50

GB/T5782

Carbon steel Q355

1. Thermal expansion loosening; 2. Thread galling

1. Allow thermal expansion gap; 2. Apply anti-galling paste

9

CH970301-010105

Hinge bolt

-

-

Alloy steel 42CrMo

1. Fatigue from repeated rotation; 2. Corrosion

1. Inspect every 3 months; 2. Grease threads after use

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 to avoid catastrophic failure.

What lubricant is suitable for hinge blocks and bolts?

Use lithium-based grease (NLGI 2) for hinge blocks in general conditions. For bolts, apply anti-galling paste (molybdenum disulfide-based) to prevent thread damage during installation.

Can NBR rubber rings be used in high-temperature environments?

NBR rubber rings (CH970301-0403) are suitable for -40℃ to 100℃. For temperatures above 100℃, upgrade to FKM rubber rings to avoid thermal aging and cracking.