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    Home / Fasteners / Plastic rotary couplings; socket couplings up to 1500 rpm / Straight rotary couplings; external tapered thread R / Direct rotary coupling 4 - R1/8"

    Direct rotary coupling 4 - R1/8"

    Code: NRC-184
    Not rated
    €16,90 –10 %
    239814 prima rotacni spojka 4 r1 8
    €16,90 –10 % €15,21 / pcs €12,57 excl. VAT
    up to 14 days
    Delivery to:
    21.11.2025
    Delivery options
    The 4 mm straight socket rotary coupling with 1/8" male taper thread is a special ball bearing coupling designed for applications where increased coupling rotation requirements up to 500 rpm are required. Designed especially for automation, measuring and control technology and pneumatic compressed air distribution in industry, engineering and automotive technology.

    Detailed information

    Free shipping
    Free shipping
    For purchases over 5,000 CZK
    We guarantee
    We guarantee
    Extended warranty and service
    Discount voucher
    Discount voucher
    For every purchase
    Return of goods within 30 days
    Return of goods within 30 days
    Completely at our expense

    Product detailed description

    Straight socket rotary union with external tapered thread - NRC-184

    • Special ball bearing couplings designed for applications where
    • Increased demands on coupling rotation
    • Designed especially for automation, measuring and control technology and pneumatic compressed air distribution in industry, engineering and automotive technology.

    Additional parameters

    Category: Straight socket rotary couplings external thread R
    Pressure: 10 bars
    Functions: Rotary clutch up to 500 rpm
    A tube: 4 mm
    Material: Brass, PU
    Medium: Compressed air
    Working temperature: 0 / +60 °C
    Thread design: Outer taper R
    Seals: PTFE
    Thread: R 1/8"
    Connection system: Plug-in system
    Sealing ring made of Teflon PTFE DR-34TE
    €0,84 –4 %
    Sealing ring made of Teflon PTFE DR-34TE
    up to 14 days
    €0,66 excl. VAT
    €0,80

    Designed for G 3/4" thread. The inner diameter is 26.5 mm and the outer diameter is 33.0 mm. Basic sealant for sealing threaded joints in pneumatic equipment.

    Code: DR-34TE
    Copper sealing ring DR-14CU
    €0,25 –4 %
    Copper sealing ring DR-14CU
    Stock (20 pcs)
    €0,20 excl. VAT
    €0,24

    Designed for G 1/4" thread. The inner diameter is 13 mm and the outer diameter is 18 mm. Basic sealant for sealing threaded joints in pneumatic equipment.

    Code: DR-14CU
    Sealing ring made of Teflon PTFE DR-18TE
    €0,27 –7 %
    Sealing ring made of Teflon PTFE DR-18TE
    Stock (20 pcs)
    €0,21 excl. VAT
    €0,25

    Designed for G 1/8" thread. The inner diameter is 10.3 mm and the outer diameter is 13.0 mm. Basic sealant for sealing threaded joints in pneumatic equipment.

    Code: DR-18TE
    Sealing ring made of Teflon PTFE DR-38TE
    €0,57 –3 %
    Sealing ring made of Teflon PTFE DR-38TE
    Stock (25 pcs)
    €0,45 excl. VAT
    €0,55

    Designed for G 1/4" thread. The inner diameter is 13.5 mm and the outer diameter is 18.0 mm. Basic sealant for sealing threaded joints in pneumatic equipment.

    Code: DR-38TE
    Copper sealing ring DR-10CU
    €0,96 –5 %
    Copper sealing ring DR-10CU
    Stock (5 pcs)
    €0,75 excl. VAT
    €0,91

    Designed for G 1" thread. The inner diameter is 33 mm and the outer diameter is 39 mm. Basic sealant for sealing threaded joints in pneumatic equipment.

    Code: DR-10CU
    RA340 sroubeni litina tvarovky armatury 25 bar tlak vzduch rozvody potrubi
    €11,64 –3 %
    Dutchman R1 1/4" internal thread fitting
    Stock (10 pcs)
    €9,33 excl. VAT
    €11,29

    Holendr cast iron fitting with internal threads R 1 1/4" up to 25 bar. Made of tempered hot-dip galvanized cast iron. Designed primarily for water and compressed air piping...

    Code: RA340-54
    RA340 sroubeni litina tvarovky armatury 25 bar tlak vzduch rozvody potrubi
    €49,33 –3 %
    Dutchman R2 1/2" internal thread fitting
    Stock (5 pcs)
    €39,55 excl. VAT
    €47,85

    Holendr cast iron fitting with internal threads R 2 1/2" up to 25 bar. Made of tempered hot-dip galvanized cast iron. Designed primarily for water and compressed air piping...

    Code: RA340-25
    Sealing ring made of Teflon PTFE DR-14TE
    €0,31 –6 %
    Sealing ring made of Teflon PTFE DR-14TE
    Stock (50 pcs)
    €0,24 excl. VAT
    €0,29

    Designed for G 1/4" thread. The inner diameter is 13.5 mm and the outer diameter is 18.0 mm. Basic sealant for sealing threaded joints in pneumatic equipment.

    Code: DR-14TE
    Copper sealing ring DR-15CU
    €2,15 –5 %
    Copper sealing ring DR-15CU
    Stock (14 pcs)
    €1,69 excl. VAT
    €2,04

    Designed for G 1 1/2" thread. The inner diameter is 48 mm and the outer diameter is 55 mm. Basic sealant for sealing threaded joints in pneumatic equipment.

    Code: DR-15CU
    Copper sealing ring DR-38CU
    €0,32 –6 %
    Copper sealing ring DR-38CU
    Stock (30 pcs)
    €0,25 excl. VAT
    €0,30

    Designed for G 3/8" thread. The inner diameter is 17 mm and the outer diameter is 22 mm. Basic sealant for sealing threaded joints in pneumatic equipment.

    Code: DR-38CU
    RA340 sroubeni litina tvarovky armatury 25 bar tlak vzduch rozvody potrubi
    €7,50 –3 %
    Union fitting with internal threads R1/4"
    Stock (20 pcs)
    €6,01 excl. VAT
    €7,27

    Holendr cast iron fitting with internal threads R 1/4" up to 25 bar. Made of tempered hot-dip galvanized cast iron. Designed primarily for water and compressed air piping...

    Code: RA340-14
    Copper sealing ring DR-18CU
    €0,19 –5 %
    Copper sealing ring DR-18CU
    Stock (30 pcs)
    €0,15 excl. VAT
    €0,18

    Designed for G 1/8" thread. The inner diameter is 10 mm and the outer diameter is 14 mm. Basic sealant for sealing threaded joints in pneumatic equipment.

    Code: DR-18CU
    RA340 sroubeni litina tvarovky armatury 25 bar tlak vzduch rozvody potrubi
    €68,77 –3 %
    Dutchman fitting with internal threads R3"
    Stock (8 pcs)
    €55,13 excl. VAT
    €66,71

    Holendr cast iron fitting with internal threads R 3" up to 25 bar. Made of tempered hot-dip galvanized cast iron. Designed primarily for water and compressed air piping...

    Code: RA340-30
    Sealing ring made of elastomer and brass DR-38EL
    €1,34 –5 %
    Sealing ring made of elastomer and brass DR-38EL
    Stock (20 pcs)
    €1,05 excl. VAT
    €1,27

    Designed for G 3/8" thread. The inner diameter is 16.9 mm and the outer diameter is 21.8 mm. Basic sealant for sealing threaded joints in pneumatic equipment.

    Code: DR-38EL
    Copper sealing ring DR-34CU
    €0,75 –5 %
    Copper sealing ring DR-34CU
    Stock (5 pcs)
    €0,59 excl. VAT
    €0,71

    Designed for G 3/4" thread. The inner diameter is 27 mm and the outer diameter is 32 mm. Basic sealant for sealing threaded joints in pneumatic equipment.

    Code: DR-34CU
    Quick coupling nickel-plated mandrel 13 mm
    Tip
    €13,24 –4 %
    Quick coupling nickel-plated mandrel 13 mm
    Stock (17 pcs)
    €10,40 excl. VAT
    €12,58

    Nickel-plated quick couplings DN7,2 with shank for hose with 13 mm inner diameter. Version in nickel-plated brass MS 58 with one-way closable valve. New mandrel contour for...

    Code: ESN13T
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