Lovejoy DD-7B 3/4″ Block and pin universal joints replacement, the TSC300.
Try a no maintenance universal joint alternative in any industrial power transmission applications.
Couplings in an industrial power transmission setup have a number of issues to contend with, annual maintenance, fundamental design flaws coming from a century old technology, industry has evolved but the technology that makes up the universal joint has not.
Twin Spring Coupling offers something different.
Industrial power transmission couplings are broken into two main areas, high speed low angle of misalignment and lower speed higher angle of misalignment. Traditionally these two needs have been service by two different couplings.
Motion control couplings like elastomeric type couplings and the universal joint like the block and pin Lovejoy DD-7B.
The problem with both couplings are their fundamental design weaknesses, for motion control coupling they can run fast but cannot work at over 1 degrees of misalignment before they start to wear out.
Universal joints are broken down into two categories. 1. Block and Pin also called Friction bearing and 2. Needle Bearing.
The Lovejoy block and pin or friction bearing universal joint can run at more than 4 degrees but can only run at 1750 rpm and needs constant maintenance to keep the bearing block greased or they too will wear out quickly.
Needle bearing universal joints can run at up to 6000 rpm and be flexible to 35 degrees but are more expensive and have to run less torque otherwise the needles in the bearing will be damaged.
Both universal joints will need their bearing block and pins and needle bearings replaced as they wear.
On top of that they traditionally cannot run over 8 degrees before technical issues like balancing and bearing wear become issues. In a 24/7/365 situation like industrial power transmission couplings its going to create interruption and a increased annual maintenance bill.
TSC300 how it’s different to a Lovejoy DD-7B UJNT coupling.
The one piece design means no greasing, no replacing components just a annual checkup, vital in industrial 24/7 applications.
Twin Spring Coupling (TSC) 300 has no internal components so no annual maintenance and can run at high and low speed as needed.
Our coupling is available in all the standard industry splines for easy replacement or retrofit for OEM. Now available in Metric sizes as well.
Flexible up to 45 degrees.
Can run at up to 7000 rpm.
Constructed of 4140 Alloy.
Boston Gear – FC30 XFCBB Bronze, FC38 XFCA Poly, FC 45 Rubber XFCR, J175B, JS250B, JS300B, UJAS 16-16, UJNL 20-20.
Ruland – UJ-HD1125, UJ-HS875, JC jaw , MJC jaw.
SKF – FRC90, SKF Flex 80, PHE L110, PHE L150, PHE L190, UJMB32, UJMA32, 1040TGHSET, UJ995, UJ507, UJ880, 1200, 1800, UJ341AG, UJ813, UJ964, UJ934. .
TB Woods – Dura-Flex WE20, WE30, L Jaw L110, AL110, SS110, L150, AL150, SS150, G-Flex grid coupling 1000T10/1000T20, 1030.
Lovejoy L-100, L-110, D-5B, D-6B, D-8B, NB-6B, NB-10B. C-226, C-276 (SOX), CJ 42/55 – 48/60 (92A), 38/45 (98/95A), 38/45 (64D), LOJ-6B, DD-3B, DD-4B, D-5B, NB-6B, DD-5B, DD-6B, LOJ-8B, Uniflex U150R, Saga S15, S-Flex Size 7-10, Delta-Flex 50.
Belden – UJ-HD1500, UJ-HS1500, UJ-HD1750, UJ-HS1500, UJ-HS1750, UJ-NB1500x750, SS-UJ-NB1500x750.
Rexnord – Omega E15, E15M, E20, E20M, Omega HDY15 HDY20, Viva V150, V190.
Falk – Wrapflex 20R.
Guardian Couplings – Guardex M-65, LJW L110, LJW L110, LJW L150, LJW L190, LJW L225.
SIT – Trasco ES 65 Red & Green, 75 Red, GU6P, GU6E, GU6H.
KTR – Rotex AL-H 38/42/48 (42-92A) 48-92A, GJL 38/48/55/65 (48 92-98) (55 92-98) (65 92A).
Spicer – 5-443X, 5-3215X, 5-3233X, 5-3232X, 5-736X, 5-554X, 5-248X, 5-242X.
Neapco – 1200, 1-1275, 1800, 1-0221, 1-1001, 1-0443, 2-0456, 2000
Moog – 237, 240, 437, 437G, 436, 466, 995.
Rockwell – CP456X, L12N, CP248X.
Weasler – 200-8261, 200-8370, 200-1200, 12RW, 200-7155, 12 series, 3200-8204, 3200-8202, 3010-7606-00, 3009-6206-00, 3002-7306-00, AW20 series, AB2 Series, AW11 Series, AB3 Series, 222-26141, 15161216.
For more information on the TSC300 go to https://twinspringcoupling.com/coupling-products/tsc-300.