Lovejoy NB-10B Needle bearing universal joint replacement, the TSC500.

TSC500 universal joint replacement for mechanical power transmission couplings.

Replace your Lovejoy NB-10B with a maintenance free, flexible shaft coupling alternative.

Couplings in the industrial sector traditionally are broken into two sectors, the elastomeric couplings that can only run at angles of up to 1° otherwise they wear out, as they cannot physically flex beyond that, normally they run at 1/2°. The Lovejoy NB10B is a universal joint and belongs to the other group.

Lovejoy NB-10B Universal Joint.

The Lovejoy NB-10B is a needle bearing universal joint and can only run at 6000 RPM maximum to reduce wear and creation of heat that can lead to the bearing seizing, this is why it must stay lubricated at all times. Its also only flexible to 25° or the needles start to wear prematurely.

The other are universal joints which can normally only run at 8° otherwise prematurely wearing the bearings within the propeller shaft of the universal joint, the bearing will become loose and that creates vibration and with continual wear the bearings will need to be replaced.

Twin Spring Coupling can run up to 35° without needing to be lubrication, and at low angles of misalignment and comparable high speeds to traditional industrial couplings.

Ball 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 ball 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 ball bearings to seize inside the bearings 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.

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 uni joints.

Our coupling is available in all the standard industry splines for easy replacement or retrofit for OEM.

Flexible up to 35°.

Speeds of up to 7000 rpm.

Constructed of 4140 Alloy.

Replaces.

Ruland –  UJ-HD1250, UJ-HS1125, JC jaw , MJC jaw couplings.

Guardian Couplings – Curved jaw 28/38, 38/45, 42/55, 48/60, Guardex M-80, Guardex I-65, LJW L150, LJW L190, LJW L225.

TB Woods – Dura Flex WE 40, L Jaw L150, AL150, SS150, L190, L225, L276, G Flex grid coupling 1000T10 & 1000T20 – 1060.

Lovejoy –  L-150, AL-L150, L-190, AL-L190, L-225, D-7B, D-8B, NB-8B, NB-10B, DD-7B, LOJ-10B, HD8B, C-226, C-276 (SOX), CJ 55/70, 65/75 (92A),  42/55 , 48/60, 55/70 (98/95A), 42/55 – 48/60 (64D), Uniflex U-150R, Saga S18, S Flex 8-12, Delta Flex 50HT/60.

Belden – UJ-HD2000, UJ-HD2500, UJ-HS1750, UJ-HS2000, UJ-NB2000x1000, SS-UJ-NB2000x1000.

Rexnord – Omega E30, E30M, E40, E40M, Omega HDY 30, Viva V190, V215, Falk Wrapflex 30R.

SIT – GU7P, GU7E, GU7H,  Trasco ES 75 red and green.

SKF – FRC90, SKF Flex 100, PHE L-150, PHE L190, PHE L-225, UJMA40, 1050TGHSET, 2200, UJ344AG, UJ814, UJ815.

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

Boston Gear – FC45 XFCBB, Rubber XFCR, XFCA Poly, UJ-J200B, UJAS 16-16, UJNL 24-24.

Spicer – 5-3214X, 5-3235X, 5-554X, 5-129X, 1240.

Neapco – 1-1875, 1-2075, 2200, 1-0005, 2-2421.

Moog – 344, 880, 882, 814, 1300.

Rockwell – L14N.

 Weasler – 200-8474, 200-1400, 14 series, 14R, 200-1875, 200-7676, 200-6580, 3010-6606-00, 3009-7606-00, 3009-6406-00, AW21 series, AB4 Series.

https://en.wikipedia.org/wiki/Coupling#Twin_spring_coupling.

For more information on the TSC500 go to https://twinspringcoupling.com/coupling-products/tsc-500/.

Weight	320 oz
Dimensions	11.15 × 3.19 × 3.19 in
Brand	Twin Spring Coupling
Size	1 1/8" Shaft Size, 1 3/8" Shaft Size, 1 5/8" Shaft Size, 1 7/8" Shaft Size, 16mm Shaft Size, 19mm Shaft Size, 22mm Shaft Size, 25mm Shaft Size, 29mm Shaft Size, 32mm Shaft Size, 35mm Shaft Size, 38mm Shaft Size, 42mm Shaft Size, 45mm Shaft Size, 48mm Shaft Size, 5/8" Shaft Size, 50mm Shaft Size, 7/8" Shaft Size, 3/4" Shaft Size, 1" Shaft Size, 1 1/4" Shaft Size, 1 1/2" Shaft Size, 1 3/4" Shaft Size, 2" Shaft Size, 2 1/4" Shaft Size
Keyways	1/2" x 1/4", 1/4" x 1/8", 10 x 3.3, 12 x 3.3, 14 x 3.8, 3/16" X 3/32", 3/8" x 3/16", 5 x 2.3, 6 x 2.8, 8 x 3.3