Replaces Universal joints, Jaw, Elastomeric and Spring couplings with new one piece mechanical power transmission couplings.

Twin Spring Coupling is the latest in mechanical power transmission coupling design. It can be used to replace jaw and spring couplings all work at high speed but low angle of misalignment. On the other end universal joints are able to handle higher amounts of misalignment but at lower speeds and require constant maintenance. Twin Spring Coupling is a coupling that can do both. Improving on existing coupling technology we provide three different versions which some allows up to 45° operational angle of usage

    • No internal components – Universal joints – Replaces the 4 bearings to be constantly lubricated and replaced when worn in a universal joint,
    • No elastomer spider in jaw couplings either SOX/ Buna-N/ Urethane, Hytrel or Bronze that wear and need to be replaced also.
    • Is designed for both parallel and angular misalignment
    • One Piece design means no broken yokes or hubs.
    • High speed- Runs at up to 7000 RPM
    • Torsional rigidity at low angles of misalignment
    • Different shaft types or sizes, from 1/2″ to 2 1/4″.
    • Being made from two counter wound springs means it absorbs shock force without damaging equipment.
    • Flexible to 45° without the need to use internal components
    • ISO9001 2007 manufactured

The patented twin spring design allows for larger angle of usage without deformation with the torque transfer seen with Universal Joints, giving the performance of a Universal joint without the constant maintenance.

So how it works compared to other couplings?

Jaw Coupling – 1° max angular misalignment, spider insert to replace

Jaw Coupling – Jaw type coupling, are an elastomeric coupling also called a Spider Jaw Coupling that being a 3 piece design, two hubs and a insert or “spider”. Its job is to run at high speed but low angle of misalignment, anything outside of the 1° it starts to wear out the  SOX, Buna-N, Urethane spider.

The Hytrel or Bronze spider inserts can only run at 1/2°. The spider inserts job is also to absorb vibration. So with the hub jaws being compressed all the time, this compression means the insert needs to be replaced as the compression means increased vibration which can damage attached equipment.

Our coupling with its twin torsion springs at low angles of misalignment it can run at the same high speeds, with higher torque and the same twin springs absorb vibration without the need for a insert.

Universal Joint – Constant greasing and replacing of bearings

Universal Joints  – U joints have either a friction bearing or needle bearings in the center of the joint to allow the joint to flex. These bearings need lubrication otherwise the heat generated during use means they will seize and need to be replaced.

The friction bearing universal joint can only run at 1700 rpm and flex to 25°, needs lubrication otherwise the heat created due to use will cause bearing failure.

The needle bearing universal joint can run at speeds of up to 6000 rpm and flex to 45° but is also a far higher priced coupling.

The 3 piece design 2 yokes and bearing cross is replaced by our 1 piece integrated design, means less that can go wrong. With our coupling there are no internal bearings, so lubrication/maintenance becomes a scheduled semi annual event.

Spring Coupling – flexible but very low speed and low torque

Spring Coupling – The spring coupling has a design similar to the beam coupling. A one piece design with a spring and two hubs. It has a low torque capacity but can run at high speeds and can only work in a single direction and has a misalignment angle of 4°. Lovejoy Uniflex coupling is a good example of a spring coupling.


Twin Spring Coupling – High Speed, High torque and High flexibility

Twin Spring coupling’s design is quite simple and its simplicity is what makes it better for most coupling applications

The two torsion springs sets are used to allow power transfer in either direction, unlike spring couplings single spring design. The internal spring set has one central ball bearing, this allows for the transfer of torque from the input hub to the output hub and visa versa.

The twin torsion spring sets also have increased torque capacity over all other spring coupling types as the torsion spring is the strongest type of spring available. This also makes it comparable to the torque output of the common universal joints, whether the block and pin or needle bearing type.

The internal assembly is inserted into the outer assembly and shear pins are installed at either end, locking the two spring sets together. This also serves a second purpose of being a built in safety mechanism to stop excessive torque being transferred. This serves to protect equipment attached to the coupling from damage.

The coupling can be reset with the replacement of the shear pin to resume operation without replacement of the whole coupling.

Coupling technology hasn’t changed until now. Its time for something new, simple and one coupling can replace most other commonly available coupling systems.


Ruland – UJ-HD1250, UJ-HS1125, UJ-HD1000-1125, UJ-HS875, UJ- HD875, UJ-HS 750, USC32-16-16-F, USKC32-16-16-F, JC jaw, MJC jaw couplings.

Guardian Couplings – Curved jaw 28/38 Green, Red, Blue, 38/45 Red, 42/55 White, 48/60 White, Guardex M-80, Guardex I-65, Guardex M-65, Guardex I-45 Guardex M-48, Guardex I-32, LJW L100, LJW L110, LJW L150, LJW L190, LJW L225.

TB Woods – Dura-Flex WE10, WE20, WE30 WE40, L100, L110, L150, AL150, SS150, L190, L225, L276, G Flex Biddy coupling 1000T10, 1000T20 Sure-Flex Size 6-10.

Lovejoy – L100, AL100, LC-100, L110, AL11O, LC110, L150, AL150, LC150, L190, AL190, LC190, L225, AL225, LC225, D-5B, D-6B, D-7B, D-8B, NB-8B, NB-10B, DD-7B, LOJ-10B, C226, C276 (SOX), CJ 55/70 – 65/75 (92A) 42/55 – 48/60, 55/70 (98/95A), 42/55 – 48/60 (64D), Uniflex U-100R, Uniflex U-150R, Saga S-13, S-15, S-18, S-Flex 6 -12, DeltaFlex 40/40HT, DeltaFlex 50, Deltaflex 50HT/60.

Belden –UJ-HD2000, UJ-HD2500, UJ-HS1750, UJ-HS2000, UJ-NB2000x1000, SS-UJ-NB2000x1000, UJ-HD1500, UJ-HS1500, UJ-HD1750, UJ-NB1500x750, SS-UJ-NB1500x750, – UJ-HD1250, UJ- HS1000, UJ-HS1250, UJ-NB1000x500

Curtis – CJ648B, CJ646B, CJ647B, CJ644, CJ645.

KTR – Rotex AL-H 28, 38, 42, 48 (42-92A) 48-92A, GJL 38, 42, 48, 55, 65 (48 92-98, 55 92-98) (65 -92A).

SKF – FRC70 – FRC110, SKF Flex 70 -100, UJMA40, UJMB32, UJMA32, UJMA25. UJ338, UJ861, N1000, L600, UJ811, UJ812, UJ880, UJ340, UJ514G, UJ1501, UJ840, UJ838, UJ995, UJ507, UJ880, 1200, 1800, UJ341AG, UJ813, UJ964, UJ934, 2200, UJ344AG, UJ814, UJ815, PHE L100, PHE L110, PHE L150, PHE L190, PHE L225.

Boston Gear – FC30 XFCBB Bronze, FC38 XFCA Poly, FC45 Rubber XFCR, XFCA Poly, UJ-J175B, JS250B, JS300B, UJAS 16-16, UJNL 20-20, J200B, UJNL 24-24, FC25 XFCBB, FC30 XFCA Poly, FC38 Rubber XFCR, J150B, JS175B, JS200B, UJAS 12-12, UJNL 16-16.

Rexnord – Omega E10, E15, E20, E30, E40, Omega HDY5, HDY10, HDY15, HDY20, HDY30, Viva V130, V150, V190, V215, Falk Wrapflex 10R, 20R, 30R.

SIT – GU5P- GU7P, GU5E-GU7E, GU5H-GU7H, Trasco ES 75 red and green, Trasco ES 55 red and green, 65 yellow, 65 red and green.

Martin – Quadra Flex Size 8, 9 ,10, 11 TPR, Size 6, 7, 8 Hytrel, ML100, ML110, ML150, ML190, ML225, MS100, MS110, MS150, MS190, MS225.

Spicer – 5-264X, 5-443X, 5-3214X, 5-110X, 5-3215X, 5-3235X, 5-103X, 5-3233X, 5-554X, 5-110X, 5-3232X, 5-129X, 1240, 5-170X, 5-736X, 5-101X, 5-554X, 5-105X, 5-248X, 5-92X, 5-242X, 24-92X.

Neapco – 1-0170, 1-0675, 1200, 1-1875, 1-1475, 1-1275, 1-2075, N1000, 1800, 2200, L600, 1-0221, 1-0005, 1-0616, 1-1001, 2-2421, 1-0475, 1-0443, 1-0121, 2-0456, 1-0300, 2000, 1-0105, 1-0171.

Moog –   338, 838, 237, 344, 340, 240, 880, 341, 437, 882, 437G, 814, 1300, 514G, 436, 466, 995.

Rockwell – CP101X, 1FR, CP456X, L14N, L12N, CP248X

Weasler – 200-0600, 200-0100, 200-8261, 200-8474, 200-1000, 200-8370, 200-1400, 14 series, L6W, 200-1200, 14R, 200-7155, 12RW, 200-1875, 200-6154, 6 Series, 1000 Series, 7 Series, 200-7155, 12 series, 200-7676, 507-9518, 15160616, 3200-8204, 200-6580, 3010-6606-00, 3009-7606-00, 3009-6406-00, AW21 series, AB4 Series, 107-20872, AW19 series, 3009-7106-00, AW10 Series, 212-26155, 15161016, 107-20561, 107-20872, 3200-8202, 3010-7606-00, 3009-206-00, 3002-7306-00, AW20 series, AB2 Series, AW11 Series, AB3 Series, 222-26141, 15161216

One coupling – multiple coupling solutions.

Elastomeric Couplings - Twin Spring Coupling components

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