Jaw Coupling

Two metal hubs with interlocking jaws and a flexible spider between them. The spider takes up shock and small misalignment between motor and machine.

Fail-safe: if the spider wears out, the jaws keep driving.
Choose the spider for the load: NBR for general use, urethane for more torque, Hytrel for the most.
Lovejoy L-type and KTR Rotex hubs and spiders do not interchange.
Hubs are bored to your shafts. Pick both bores when you open a part.

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The photo shows what the part looks like. Letters on the drawing match the table columns; point at one to see where it is measured.

Not sure which type? Compare them

Type	Misalignment	Backlash	Shock damping	Torque	Best for
Jaw CouplingYou are here	Low, about 1°	Low	Good	3–1,100 Nm	Motors to pumps, fans and gearboxes; fail-safe
Pin Bush Coupling	Low, about 0.5°	Low	Good	50–50,000 Nm	Large motors in heavy industry; bushes change easily
Tyre Coupling	High, up to 4°	Some	Very good	24–6,300 Nm	Shock loads and shafts that are hard to align
Gear Coupling	Medium, about 1.5°	Some	None	500–100,000 Nm	Very high torque in a small size; needs grease
Resilient Coupling	Medium	Low	Very good	100–50,000 Nm	Diesel engines and drives with torsional vibration
Disc Coupling	Low, about 1°	Zero	None	50–10,000 Nm	High speed and precision, no lubrication
Servo Coupling	Low to medium	Zero	None	0.5–500 Nm	Servo motors, encoders and ball screws
Chain Coupling	Low, about 1°	Some	None	50–20,000 Nm	Simple, compact drives; easy to disconnect
Torque Limiter	Depends on the drive it carries	Low	None	2–5,000 Nm slip setting	Protecting machines from jams and overloads
Nylon Gear Coupling	Medium, about 1°	Low	Some	10–2,000 Nm	Pumps and general drives; no lubrication, quiet
Locking Assembly	None, it is a rigid shaft-hub joint	Zero	None	20–100,000 Nm	Fixing pulleys, sprockets and hubs to a shaft without a keyway

Find a coupling for your drive

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Motor shaft ØmmDriven shaft ØmmMotor powerkWSpeedrpmLoad type

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Spider

Hub material

Rated torque

50 of 50 parts match

Part no.	Size	Spider	Hub material	Bore rangedmm	Outer ØAmm	Overall lengthBmm	Rated torqueNm	Max speedrpm	Priceex GST
Lovejoy L-type28 parts · Straight jaws with a cushioning NBR spider between the hubs. Sintered iron, aluminium or cast-iron hubs. Interchanges with most L-type couplings.
L099-NBR-CI	L-099	NBR	Cast iron	10–30	65	72	35.1	–	₹2,030
L099-NBR-AL	L-099	NBR	Aluminium	10–30	65	72	35.1	–	₹2,310
L095-NBR-CI	L-095	NBR	Cast iron	10–28	54	63	21.1	–	₹1,540
L095-NBR-AL	L-095	NBR	Aluminium	10–28	54	63	21.1	–	₹1,760
L050-NBR-SI	L-050	NBR	Sintered iron	5–16	27	42	2.8	–	₹710
L050-NBR-AL	L-050	NBR	Aluminium	5–16	27	42	2.8	–	₹850
L075-NBR-SI	L-075	NBR	Sintered iron	9–22	44.5	55	9.8	–	₹1,140
L075-NBR-AL	L-075	NBR	Aluminium	9–22	44.5	55	9.8	–	₹1,370
L070-NBR-SI	L-070	NBR	Sintered iron	9–20	36	51	4.9	–	₹900
L070-NBR-AL	L-070	NBR	Aluminium	9–20	36	51	4.9	–	₹1,080
L100A-NBR-CI	L-100A	NBR	Cast iron	10–35	65	88	46.4	–	₹2,030
L100A-NBR-AL	L-100A	NBR	Aluminium	10–35	65	88	46.4	–	₹2,310
L100-NBR-CI	L-100	NBR	Cast iron	10–38	65	88	46.4	–	₹2,030
L100-NBR-AL	L-100	NBR	Aluminium	10–38	65	88	46.4	–	₹2,310
L295-NBR-CI	L-295	NBR	Cast iron	30–95	237	238	1,279	–	₹21,110
L190-NBR-CI	L-190	NBR	Cast iron	15–60	115	133	190	–	₹5,330
L190-NBR-AL	L-190	NBR	Aluminium	15–60	115	133	190	–	₹6,090
L225-NBR-CI	L-225	NBR	Cast iron	15–65	127	153	265	–	₹6,400
L276-NBR-CI	L-276	NBR	Cast iron	25–75	157	200	532	–	₹9,530
L350-NBR-CI	L-350	NBR	Cast iron	30–115	305	309	4,308	–	₹34,660
L280-NBR-CI	L-280	NBR	Cast iron	30–80	192	200	782	–	₹14,020
L226-NBR-CI	L-226	NBR	Cast iron	25–70	137	178	327	–	₹7,370
L300-NBR-CI	L-300	NBR	Cast iron	30–105	254	283	3,047	–	₹24,180
L150-NBR-CI	L-150	NBR	Cast iron	15–48	96	115	141	–	₹3,860
L150-NBR-AL	L-150	NBR	Aluminium	15–48	96	115	141	–	₹4,410
L110-NBR-CI	L-110	NBR	Cast iron	15–42	85	108	89	–	₹3,130
L110-NBR-AL	L-110	NBR	Aluminium	15–42	85	108	89	–	₹3,570
L2955-NBR-CI	L-2955	NBR	Cast iron	30–105	237	264	2,132	–	₹21,110
Lovejoy SW Snap Wrap22 parts · Jaw coupling with a wrap-around NBR element held by a steel ring. The element is inspected or replaced in minutes without moving the motor or the driven machine.
SW095-NBR-CI	SW-095	NBR	Cast iron	10–28	65	63	21.1	–	₹2,530
SW095-NBR-AL	SW-095	NBR	Aluminium	10–28	65	63	21.1	–	₹2,890
SW150-NBR-CI	SW-150	NBR	Cast iron	15–48	111	115	141	–	₹6,250
SW150-NBR-AL	SW-150	NBR	Aluminium	15–48	111	115	141	–	₹7,140
SW100-NBR-CI	SW-100	NBR	Cast iron	10–38	78	88	46.4	–	₹3,390
SW100-NBR-AL	SW-100	NBR	Aluminium	10–38	78	88	46.4	–	₹3,870
SW276-NBR-CI	SW-276	NBR	Cast iron	25–75	173	200	532	–	₹14,340
SW099-NBR-CI	SW-099	NBR	Cast iron	10–30	78	72	35.1	–	₹3,390
SW099-NBR-AL	SW-099	NBR	Aluminium	10–30	78	72	35.1	–	₹3,870
SW2955-NBR-CI	SW-2955	NBR	Cast iron	30–105	253	264	2,132	–	₹29,990
SW280-NBR-CI	SW-280	NBR	Cast iron	30–80	208	200	782	–	₹20,470
SW226-NBR-CI	SW-226	NBR	Cast iron	25–70	153	178	327	–	₹11,340
SW190-NBR-CI	SW-190	NBR	Cast iron	15–60	129	133	190	–	₹8,240
SW190-NBR-AL	SW-190	NBR	Aluminium	15–60	129	133	190	–	₹9,410
SW350-NBR-CI	SW-350	NBR	Cast iron	30–115	323	309	4,308	–	₹48,520
SW300-NBR-CI	SW-300	NBR	Cast iron	30–105	272	283	3,047	–	₹34,580
SW225-NBR-CI	SW-225	NBR	Cast iron	15–65	142	153	265	–	₹9,850
SW110-NBR-CI	SW-110	NBR	Cast iron	15–42	96	108	89	–	₹4,820
SW110-NBR-AL	SW-110	NBR	Aluminium	15–42	96	108	89	–	₹5,510
SW100A-NBR-CI	SW-100A	NBR	Cast iron	10–35	78	88	46.4	–	₹3,390
SW100A-NBR-AL	SW-100A	NBR	Aluminium	10–35	78	88	46.4	–	₹3,870
SW295-NBR-CI	SW-295	NBR	Cast iron	30–95	253	238	1,279	–	₹29,990

Lovejoy L-type28 parts · Straight jaws with a cushioning NBR spider between the hubs. Sintered iron, aluminium or cast-iron hubs. Interchanges with most L-type couplings.

Lovejoy SW Snap Wrap22 parts · Jaw coupling with a wrap-around NBR element held by a steel ring. The element is inspected or replaced in minutes without moving the motor or the driven machine.