Lovejoy L-110 1 1/4″ Sox/Urethane Jaw coupling alternative – the TSC150.
Couplings in the industrial sector traditionally are broken into two sectors, the elastomeric couplings, like jaw type couplings that can only run at angles of 1° or less, as they cannot physically flex beyond that and universal joints.
Lovejoy L-110 Jaw couplings are a 3 piece elastomeric coupling, an input and output hub and a spider insert, the insert can be made up of 3 different materials SOX, (NBR/Buna-N/Nitrile Rubber),Urethane, Hytrel and Bronze.
Each insert gets progressively stiffer and less able to absorb vibration so the angular misalignment becomes smaller with each insert.
The other are universal joints which can normally only run at less than 8° otherwise prematurely wearing the bearing cross within the propeller shaft of the universal joint, the bearing races will start to wear on the outside which means the ball bearings will become loose and that creates vibration.
With continual wear the bearings will fail.
The bearings need also to be constantly greased otherwise the ball bearings will not have any lubrication, and with them running at high speed they will seize due to the heat causing them to expand.
Jaw couplings the spider/inserts wear after use of 1° and yokes can crack these are two main causes for jaw coupling replacements.
Twin Spring Coupling can run up to 25° without needing to be lubrication, and at low angles of misalignment and comparable high speeds to traditional industrial couplings.
Bearings being very precise instruments also need to be contained to ensure infiltration by any foreign contaminants, as things like water, mud, dust or dirt will again cause the bearings to seize in their tracks and this means bearing failure.
Being used at high speed for long periods of time produces heat and that can cause the bearings to seize inside the coupling leading to premature failure.
The other downside to a universal joint are the yokes which the bearings are contained in, the coupling piece of the yokes are quite tough but the section that contains the bearings not so much as they have to hold the bearings.
This is a weak point as the bearings are usually less than 2″ across so the machining to contain the bearings is a lot smaller than the rest of the yoke, which means the likely of them cracking is that much higher.
Cracking leads to catastrophic failure and replacement of both the yoke and universal joint is assured. This makes it an expensive repair as with the price of the yoke and universal joint, it is usually cheaper just to replace everything, both yokes and the propeller joint.
Lovejoy L-110 How is the TSC150 better?
Twin Spring Coupling is different it replaces the entire U joint, yokes, propeller/cross bearings everything, with a simple one piece design.
By being a one piece design also means Twin Spring Coupling wont break like the yokes do in traditional Lovejoy L-110 joints.
Our coupling is available in all the standard industry splines for easy replacement or retrofit for OEM.
Ruland – UJ- HD875, UJ-HS 750, JC jaw , MJC jaw.
Lovejoy – Lovejoy L-090, L-099, L-100, L-110, C-226 C-276 (SOX) CJ28/38, CJ24/32, D-3, D-4, LOJ-6, DD-3, DD-4 Uni joint D-5,NB-6, DD-5, DD-6, LOJ-8, Uniflex U100, U125, U137, Saga S13, S Flex Size 6-9, Delta Flex 40/40HT.
Rexnord – Omega Orange 10-15, Omega HDY 5-10, Viva 130.
Falk – Wrapflex 10R.
Martin – Quadra Flex Size 8-9 Thermo Plastic Rubber (TPR), Size 6 Hytrel., MS150 Buna-N, ML150 Buna-N, ML100 Hytrel.
Guardian Couplings – Guardex M-48, Spec I-32, LJW L100-LJW L190.
SIT – Trasco ES, Servo Plus 45, GU5P, GU5H.
Belden – MS20270B16, UJ-NB1000x500, SS-UJ-NB1000x500.
KTR – Rotex AL-H 28/38 (92,98, 64) 38-92A, GJL 38 (92A).
Boston Gear – FC25 XFCBB Bronze, FC30 XFCA Poly, FC38 Rubber XFCR, J150, JS175, JS200, UJAS 12-12, UJNL 16-16.
Curtis – CJ644, CJ645.
SKF – FRC 150, SKF Flex 90-100, UJMA25.
For more information on the TSC150 go to https://twinspringcoupling.com/coupling-products/tsc-150/.