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1/4" 3/8" Hydraulic Quick Couplings Iso Series Iso 16028-cb-sp-6fn-ff

1/4" 3/8" Hydraulic Quick Couplings Iso Series Iso 16028-cb-sp-6fn-ff

Flat Face Hydraulic Quick Couplings

1/4'' Hydraulic Quick Couplings

High Pressure Hydraulic Quick Couplings

Place of Origin:

Shanghai, China

Brand Name:

Carterberg

Certification:

IATF16949

Model Number:

CB-SP-6FN-FF

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Product Details
Type:
Hydraulic Quick Coupling
ISO Standard:
Iso 16028
Size:
1/4", 3/8", 5/8", 3/4", 1", 1-1/4"
Interface Method:
Flat Face
Rated Pressure:
Up To 350 Bar / 5075 Psi
Temperature Range:
–20°C To +100°C
Material:
Zinc-plated Steel With Bichromate Or QPQ
Application:
Hydraulic Pump Systems, Public Works Equipment,Agriculture & Forestry Machinery,Railway & Steel Industry Hydraulics
Interchangeable:
Hansen FF Series
Highlight:

Flat Face Hydraulic Quick Couplings

,

1/4'' Hydraulic Quick Couplings

,

High Pressure Hydraulic Quick Couplings

Payment & Shipping Terms
Minimum Order Quantity
Negotiation
Price
Negotiation
Packaging Details
carton
Delivery Time
7-20 work days
Payment Terms
L/C,D/A,D/P,T/T,Western Union
Supply Ability
5000~20000 pc/month
Product Description

CB-SP-6FN-FF Flat-Face Hydraulic Coupler

Optimized for Demanding Hydraulic Applications

The CB-SP-6FN-FF is an ISO 16028-compatible flat-face quick coupling that prioritizes mechanical performance, pressure handling, and connection security. Designed with a QPQ-treated sleeve and body options, this model delivers enhanced surface durability and resistance to corrosion, wear, and pressure fatigue — even under intensive hydraulic operation.
 
Its sleeve-locking design prevents accidental disconnection during vibration, movement, or manual impact — offering an added layer of operational safety in the field.
 

Key Technical Features

•  Push-to-Connect Operation
Fast, efficient coupling — connect by simply pushing without tools.
•  Sleeve Locking Device
Safety lock engages automatically upon full connection, reducing risks of separation during operation.
•  QPQ Surface Treatment (Optional)
Enhances steel hardness, wear resistance, and corrosion protection, especially valuable for demanding outdoor or industrial environments.
•  Outstanding Flow and Pressure Performance
Withstands up to 5075 PSI, with rated flow from 12 to 155 l/min, suitable for heavy-duty hydraulic circuits.
•  Minimal Spillage
Maintains clean operation with extremely low fluid loss per disconnect:0.008 ml to 0.03 ml, depending on size
 

Material and Construction Details

Component Material / Finish
Body Zinc-plated steel with bichromate or QPQ
Sleeve QPQ-finished steel
Valves Steel, black finish
End Connections Zinc-plated steel
Springs & Balls AISI 302 stainless steel
Seals Nitrile (NBR)
Dust Caps / Plugs Red PVC (other options available)
Note: QPQ (Quench-Polish-Quench) finish offers deep surface hardening and improved corrosion resistance.
 

Performance Summary

Parameter Specification
Standard ISO 16028
Connection Type Push-to-connect with locking sleeve
Working Pressure Up to 350 bar / 5075 PSI
Rated Flow 12 – 155 l/min
Temperature Range –20°C to +100°C (–4°F to +212°F)
Spillage per Disconnect 0.008 – 0.03 ml
Sizes Available 1/4", 3/8", 5/8", 3/4", 1", 1-1/4"
 

Application Scenarios

•  Hydraulic Pump Systems
Reliable, leak-minimized connection in stationary or mobile hydraulic systems.
•  Public Works Equipment
Protects against unintentional decoupling during shock or movement.
•  Agriculture & Forestry Machinery
Robust sealing and locking for tractors, harvesters, and attachments.
•  Railway & Steel Industry Hydraulics
Durable under repetitive actuation cycles and high-pressure lines.
 

Dimensional Overview

CB-SP-6FN-FF female coupler technical drawing, highlighting flat-face design and QPQ-treated sleeve

1/4" 3/8" Hydraulic Quick Couplings Iso Series Iso 16028-cb-sp-6fn-ff 0

Body Size PARTNO. Thread A B HEX
1/4" CB-S2S-6FN 1/4’’ 2.32 1.10 0.87
3/8" CB-S3S-6FN 3/8’’ 2.87 1.26 1.18
3/8" CB-S3S-6FN 1/2’’ 2.87 1.26 1.18
1/2" CB-S4S-6FN 1/2’’ 3.31 1.50 1.42
1/2" CB-S4S-6FN 3/4’’ 3.31 1.50 1.42
5/8" CB-S5S-6FN 1/2’’ 3.23 1.65 1.42
5/8" CB-S5S-6FN 3/4’’ 3.39 1.65 1.42
3/4" CB-S6S-6FN 3/4’’ 3.74 1.89 1.61
3/4" CB-S6S-6FN 1’’ 3.86 1.89 1.61
1" CB-S8S-6FN 1-1/4’’ 4.33 2.17 2.17

 

CB-SP-6FN-FF male flat-face quick coupling schematic with structural detail

1/4" 3/8" Hydraulic Quick Couplings Iso Series Iso 16028-cb-sp-6fn-ff 1

Body Size PARTNO. Thread C D HEX
1/4" CB-P2S-6FN 1/4’’ 2.05 0.63 0.87
3/8" CB-P3S-6FN 3/8’’ 2.52 0.78 1.18
3/8" CB-P3S-6FN 1/2’’ 2.52 0.78 1.18
1/2" CB-P4S-6FN 1/2’’ 2.91 0.96 1.42
1/2" CB-P4S-6FN 3/4’’ 2.95 0.96 1.42
5/8" CB-P5S-6FN 1/2’’ 2.87 1.06 1.42
5/8" CB-P5S-6FN 3/4’’ 2.95 1.06 1.42
3/4" CB-P6S-6FN 3/4’’ 3.39 1.18 1.61
3/4" CB-P6S-6FN 1’’ 3.39 1.18 1.61
1" CB-P8S-6FN 1-1/4’’ 3.54 1.42 2.17

 

1/4" 3/8" Hydraulic Quick Couplings Iso Series Iso 16028-cb-sp-6fn-ff 2

Real-world product image of CB-SP-6FN-FF set, featuring push-to-connect and safety locking structure.

 

Frequently Asked Questions

Q: What’s the difference between CB-SP-6FN-FF and QA variants?
A: Both feature sleeve locks, but the FF version prioritizes mechanical performance, pressure tolerance, and includes optional QPQ treatment for enhanced durability.
Q: Can I use this coupler outdoors or in harsh environments?
A: Yes — the corrosion-resistant finish and locking design make it suitable for outdoor and mobile applications.
Q: Is it compatible with standard ISO 16028 equipment?
A: Fully compatible. It can connect with Hansen FF Series and equivalent ISO 16028 models.
 

 Related Products

Compare All ISO 16028 Couplers »
CB-SP-6FN-QA – Sleeve-Locked Version with Standard Zinc Finish »

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