Hydraulic Fittings

Hydraulic fittings form part of a hydraulic system which connects hoses, pipes and tubes. There are various fittings which are used to connect the system together and help the hydraulic fluid to flow through. Hydraulic fittings, or hose fittings, are used to connect hydraulic hoses and pipes to other components such as valves and pumps.

Hydraulic fittings will usually have a male and/or female connection which join to other components. The connections are usually threaded and there are several thread standards available, such as JIC, BSP and BSPP. BSP male threads will seal with BSP female threads, for example. Popular materials include plastic, brass and stainless steel fittings.

Types of hydraulic fittings:

  • Plugs
  • Adapters
  • Couplings
  • Unions
  • Reducers
  • Elbows

How are hydraulic fittings attached?

There are several methods used to attach a hydraulic fitting. Examples include:

  • Compression fittings provide water tight connections by using pressure to seal the connection. They usually use a compression nut which, when tightened, removes space between the ferrule and the pipe.
  • Threaded fittings have screw threads on both sides of the connection. They accept connections with compatible threads and screw together for a secure connection. Not all threads provide a tight seal and may benefit from additional coatings or seals.
  • Crimped fittings require crimping of the hose to the fitting. You may require a crimping tool to achieve this.

Thread Types

Hydraulics machines are used all across the world and there are many components used in each system. Thread types are used to help make parts easily identifiable and easy to maintain and replace. Some examples of thread standards include:

  • NPT stands for National Pipe Thread where the threads are at a 60° angle. There is also NPT (National Pipe Taper) and NPS (National Pipe Straight).
  • BSP fittings stands for British Standard Pipe where the angle of the threads is 55°. This standard includes BSPT (British Standard Pipe Taper) and BSPP (British Standard Parallel Pipe).
  • Metric threads are specified by their diameter and pitch in millimetres (mm).

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Description Price Connector A Hydraulic Fitting Type Connector B Material Finish Connector A - Thread Size Connector A - Thread Standard Connector A - Gender Connector B - Thread Size Connector B - Gender Connector B - Thread Standard Maximum Operating Pressure Maximum Operating Temperature Minimum Operating Temperature
RS庫存編號 807-621
製造零件編號12-8HMK4S
BrandParker
HK$62.575
/個 (每包:2個)
單位
G 1/2 Male Hydraulic Straight Threaded Adaptor G 3/4 Male Steel Yellow Chromated, Zinc Plated 1/2in G Male 3/4in Male G 310 bar +120°C -40°C
RS庫存編號 807-564
製造零件編號4HMK4S
BrandParker
HK$20.725
/個 (每包:2個)
單位
G 1/4 Male Hydraulic Straight Threaded Adaptor G 1/4 Male Steel Yellow Chromated, Zinc Plated 1/4in G Male 1/4in Male G 450 bar +120°C -40°C
RS庫存編號 367-5887
製造零件編號0912 00 13
BrandLegris
HK$27.863
/個 (每包:3個)
單位
G 1/4 Female Hydraulic Elbow Threaded Adaptor G 1/4 Female Brass Nickel Plated 1/4in G Female 1/4in Female G 60 bar +80°C -10°C
RS庫存編號 914-9511
製造零件編號59972
HK$15.60
單位
- Hydraulic Filling & Drain Plug - Polyamide Based Technopolymer Matte 1/8in G - - - - - +100°C -30°C
RS庫存編號 366-6243
製造零件編號WEE10LRCF
BrandParker
HK$188.61
單位
G 1/4 Female Hydraulic Elbow Compression Tube Fitting - Steel Zinc Plated 1/4in G Female - - - 250 bar +120°C -40°C
RS庫存編號 302-8089
製造零件編號4BMTXS
BrandParker
HK$24.44
/個 (每包:5個)
單位
- Hydraulic End Nut - Steel Zinc Plated - - - - - - 350 bar +120°C -40°C
RS庫存編號 366-6221
製造零件編號MIK-1
BrandParker
HK$628.76
單位
- Hydraulic Thread Identification Kit - - - - BSPP, BSPT, Metric, NPT, SAE - - - - - - -
RS庫存編號 326-8956
製造零件編號3118 04 19
BrandLegris
HK$36.15
/個 (每包:5個)
單位
M5 x 0.8 Hydraulic Banjo Compression Tube Fitting - Nickel Plated Brass, Nitrile Rubber, Polymer, Stainless Steel Nickel Plated (Sub Base) - Metric - - - - 20 bar +80°C -20°C
RS庫存編號 807-413
製造零件編號RI1/4EDX1/8CF
BrandParker
HK$37.17
/個 (每包:2個)
單位
G 1/4 Male Hydraulic Straight Threaded Reducer G 1/8 Female Steel Zinc Plated 1/4in G Male 1/8in Female G 400 bar +100°C -30°C
RS庫存編號 807-592
製造零件編號8-6HMK4S
BrandParker
HK$32.165
/個 (每包:2個)
單位
G 3/8 Male Hydraulic Straight Threaded Adaptor G 1/2 Male Steel Yellow Chromated, Zinc Plated 3/8in G Male 1/2in Male G 380 bar +120°C -40°C
RS庫存編號 183-6305
製造零件編號6FNMK4S
BrandParker
HK$43.28
/個 (每包:2個)
單位
G 3/8 Hydraulic Blanking Plug - Steel - 3/8in G - - - - 380 bar - -
RS庫存編號 183-6298
製造零件編號4FNMK4S
BrandParker
HK$41.705
/個 (每包:2個)
單位
G 1/4 Hydraulic Blanking Plug - Steel - 1/4in G - - - - 450 bar - -
RS庫存編號 120-873
製造零件編號HF14
BrandHi-Force
HK$239.87
單位
NPT 3/8-18 Female Hydraulic Straight Threaded Adaptor NPT 3/8-18 Female Steel - 3/8-18 NPT Female 3/8-18 Female NPT 700 bar - -
RS庫存編號 498-312
製造零件編號6PNK4S
BrandParker
HK$27.82
/個 (每包:5個)
單位
- Hydraulic Blanking Plug - Steel Yellow Chromated, Zinc Plated 3/8in G - - - - 380 bar +120°C -40°C
RS庫存編號 302-8663
製造零件編號16F3MXS
BrandParker
HK$166.25
/個 (每包:2個)
單位
- - - Steel Zinc Plated - - - - - - 160 bar +120°C -40°C
RS庫存編號 283-3307
製造零件編號58631
HK$16.694
/個 (每包:5個)
單位
- Hydraulic Blanking Plug - Glass Fibre Reinforced Plastic (GRP) Matte 3/4in G - - - - - +130°C -30°C
RS庫存編號 807-570
製造零件編號6-4HMK4S
BrandParker
HK$28.16
/個 (每包:2個)
單位
G 1/4 Male Hydraulic Straight Threaded Adaptor G 3/8 Male Steel Yellow Chromated, Zinc Plated 1/4in G Male 3/8in Male G 450 bar +120°C -40°C
RS庫存編號 283-3313
製造零件編號58641
HK$20.304
/個 (每包:5個)
單位
- Hydraulic Blanking Plug - Glass Fibre Reinforced Plastic (GRP) Matte 1in G - - - - - +130°C -30°C
RS庫存編號 797-2034
製造零件編號8S6MK4S
BrandParker
HK$199.57
單位
G 1/2 Male Hydraulic Tee Threaded Adaptor G 1/2 Male Steel Zinc Plated - G Male - Male G 199bar - -
RS庫存編號 283-1339
製造零件編號FZ1617
BrandEnerpac
HK$107.58
單位
NPT 3/8-18 Male Hydraulic Straight Threaded Adaptor NPT 3/8-18 Male - - 3/8-18 NPT Male 3/8-18 Male NPT 700 bar - -