FFH75×500Z Diverter Spare Parts Catalog

1

CH970301-0100

Main seal assembly

Nitrile rubber + carbon steel substrate

1. High-pressure fluid erosion; 2. Contaminant intrusion

1. Filter fluid to remove particles ≥5μm; 2. Inspect seal lip for deformation monthly

2

CH970301-0400

Inner sealer

Stainless steel 304 + PTFE coating

1. Thermal expansion mismatch; 2. Abrasive wear

1. Avoid rapid temperature changes (>5℃/min); 2. Apply food-grade lubricant for contact surfaces

3

CH970301-0500

Main bearing plate

Forged steel 42CrMo

1. Uneven load distribution; 2. Fatigue cracking

1. Torque check per GB/T 16823.3; 2. Replace after 10,000 hours of operation

4

CH970301-0700

Latch mechanism

Carbon steel Q235 + zinc plating

1. Corrosion from humid environments; 2. Mechanical jamming

1. Regularly remove debris from latch grooves; 2. Apply anti-corrosion spray every 3 months

5

CH970301-0900

Support ring assembly

Aluminum alloy 6061 + anodizing

1. Impact damage during installation; 2. Oxidation

1. Use torque wrench for installation (35±5 N·m); 2. Clean with neutral detergent to prevent oxide buildup

6

CH970301-1000

Shell assembly

Welded carbon steel + epoxy coating

1. External impact; 2. Coating peeling

1. Avoid direct impact with heavy tools; 2. Touch up coating scratches within 24 hours

7

CH970301-1600

Bumper sub

Polyurethane (Shore A 85)

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

1. Shield from direct sunlight; 2. Ensure compression stroke ≤15% of total length

8

CH970301-19

Outer barrel

Stainless steel 316L

1. Chemical corrosion; 2. Cavitation damage

1. Test pH value of medium (6-8 recommended); 2. Maintain fluid velocity ≥0.5 m/s to avoid cavitation

9

CH970301-2100

Hydraulic line assembly

Steel braided hose + brass fittings

1. Pressure surges; 2. Hose kinking

1. Install pressure relief valve (set to 1.2×working pressure); 2. Ensure minimum bend radius ≥10×hose diameter

10

CH970301-2400

Avert turn mechanism

Cast iron HT250 + copper bushings

1. Lack of lubrication; 2. Misalignment

1. Lubricate with lithium-based grease every 500 hours; 2. Align per ISO 9283 accuracy standards

11

CH970301-2500

Hydrostatic test tool

Carbon steel + rubber seals

1. Over-pressurization; 2. Seal degradation

1. Never exceed test pressure (2×working pressure); 2. Replace seals annually regardless of condition

12

CH970301-2600

Handling tool assembly

Alloy steel + rubber grips

1. Overloading; 2. Grip wear

1. Do not exceed rated load (500kg); 2. Replace grips when wear depth >3mm

1

CH970301-03

O ring φ854×7

Nitrile rubber (NBR 70)

1. Chemical swelling; 2. Extrusion at high pressure

1. Avoid contact with mineral oils above 120℃; 2. Use backup rings for pressure >10MPa

2

CH970301-0800

Lip seal I

FKM (Viton) + spring steel

1. Dry running; 2. Shaft surface scratches

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

3

CH970301-12

O ring

Silicone rubber (VMQ)

1. Thermal aging; 2. Compression set

1. Operate within -55℃ to 200℃; 2. Replace after 6 months of continuous compression

4

CH970301-17

O ring 890×7

Ethylene Propylene Diene Monomer (EPDM)

1. Ozone degradation; 2. Mechanical pinching

1. Store in ozone-free environment; 2. Install with plastic tools to avoid pinching

5

CH970301-1800

Lip seal II

Polyacrylate (ACM) + carbon steel

1. Oil contamination; 2. Misalignment

1. Use filtered hydraulic oil (NAS 8 class); 2. Control shaft runout ≤0.1mm

1

CH970301-02

End Shield

Stainless steel 304

1. Corrosion; 2. Bolt loosening-induced vibration

1. Clean with passivating agent after installation; 2. Use lock washers to prevent loosening

2

CH970301-06

Guiding bond

Brass H62

1. Wear from friction; 2. Deformation from over-torque

1. Apply anti-seize compound to contact surfaces; 2. Torque to 25±3 N·m

3

CH970301-11

Name plate

Aluminum + laser engraving

1. Wear from abrasion; 2. Fading from UV

1. Install in low-abrasion area; 2. Apply UV-resistant coating annually

4

CH970301-13

Connecting flange

Carbon steel Q355B

1. Weld joint fatigue; 2. Gasket damage

1. Inspect welds per AWS D1.1 standard; 2. Replace gasket when reusing flange

5

CH970301-14

Clamp

Alloy steel 40Cr

1. Fatigue from repeated clamping; 2. Corrosion

1. Avoid exceeding clamping force limit (10kN); 2. Zinc-plate after maintenance

6

CH970301-15

Transition flange

Stainless steel 316

1. Pitting corrosion; 2. Misalignment stress

1. Test for chloride content <20ppm; 2. Align flanges with gap ≤0.5mm

7

CH970301-20

Down clamp

Carbon steel + hot-dip galvanizing

1. Galvanization peeling; 2. Overloading

1. Avoid impact on galvanized layer; 2. Do not exceed load capacity (800kg)

8

CH970301-22

Fixed plate

Steel plate Q235

1. Bending from uneven load; 2. Rust

1. Distribute load evenly across 4 mounting points; 2. Paint with anti-rust paint every year

9

520502090200150000

Blank plug

Brass + PTFE tape

1. Thread damage; 2. Seal failure

1. Tighten by hand first, then 1/4 turn with wrench; 2. Replace PTFE tape each time

1

CH970301-23

Screw M36×125

-

Alloy steel 42CrMo

1. Fatigue fracture; 2. Thread galling

1. Torque to 450±50 N·m; 2. Apply anti-galling paste to threads

2

420101121108001000

Screw M8×16

GB/T70.1

Stainless steel 304

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

1. Use matching Phillips screwdriver; 2. Tighten to 8±1 N·m

3

420102012516000000

Lifting bolt M16

GB/T825

Carbon steel Q235

1. Overloading; 2. Thread damage

1. Do not exceed lifting capacity (2t/bolt); 2. Inspect threads before each use

4

420102012548000000

Lifting bolt M48

GB/T825

Alloy steel 35CrMo

1. Fatigue from repeated lifting; 2. Corrosion

1. Replace after 50 lifting cycles; 2. Grease threads after use

5

420101121112005000

Screw M12×55

GB/T70.1

Stainless steel 304

1. Vibration-induced loosening; 2. Thermal expansion

1. Use lock nuts; 2. Allow thermal expansion gap during installation

6

420101221112002000

Screw M12×25

GB/T70.2

Carbon steel 45#

1. Over-torque; 2. Rust

1. Torque to 25±3 N·m; 2. Apply anti-rust oil in outdoor use

7

420503015361600000

Grower washer 36

GB/T93

Spring steel 65Mn

1. Fatigue deformation; 2. Corrosion

1. Replace when deflection >1mm; 2. Use with compatible bolts to avoid galvanic corrosion

8

420221021136110000

Bolt M36×3×110

GB/T5785

Alloy steel 40Cr

1. Thread wear; 2. Hydrogen embrittlement

1. Avoid repeated assembly/disassembly; 2. Bake at 200℃ for 2 hours after plating

9

420201011136190000

Bolt M36×190

GB/T5782

Carbon steel Q355

1. Bending under load; 2. Corrosion

1. Ensure perpendicular installation; 2. Use zinc-rich paint for protection

10

420402015360400000

Nut M36

GB/T6170

Alloy steel 42CrMo

1. Thread stripping; 2. Loosening

1. Do not over-tighten (max 500 N·m); 2. Use nylon lock nuts for vibration environments

11

420101020604000000

Screw M4X6 (Purchased Part)

-

Brass H62

1. Cross-threading; 2. Wear from small loads

1. Use precision screwdriver; 2. Tighten to 1.5±0.2 N·m

12

420221011148200000

Screw M48×3×200

GB/T5785

Alloy steel 35CrMo

1. Fatigue fracture; 2. Thread corrosion

1. Torque to 800±100 N·m; 2. Inspect threads quarterly for rust

13

420503015481600000

Spring washer 48

GB/T93

Spring steel 50CrVA

1. Loss of elasticity; 2. Cracking

1. Replace after 2 disassembly cycles; 2. Avoid heating above 250℃

14

420101123510001000

Screw M10×15

GB/T70.1

Stainless steel 316

1. Chemical corrosion; 2. Vibration loosening

1. Suitable for corrosive environments; 2. Use thread-locking adhesive

What is the recommended replacement cycle for O rings?

For NBR and EPDM O rings, replace every 6-12 months; for FKM O rings, replace every 12-18 months. Replace immediately if swelling, cracking, or extrusion is found.

How to handle bolt thread galling?

Apply anti-galling paste (containing molybdenum disulfide) before installation. Avoid over-torque and use compatible material pairs (e.g., stainless steel bolt with brass nut).

Can the hydraulic line assembly be used in high-temperature environments?

The standard CH970301-2100 hydraulic line assembly is suitable for -20℃ to 100℃. For temperatures above 100℃, contact us for a high-temperature resistant version (fluoropolymer hose).