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ANID: AN01535565607

LOVEJOY Jaw Coupling Spiders

Lovejoy jaw coupling spiders are engineered to transfer torque and rotation from one shaft to another. These Lovejoy couplings can accommodate misaligned shafts, and secure them from damage due to damping & vibrations. Lovejoy spider couplings are available in L, AL and LC types, as well as bronze, Hytrel, polyurethane, SOX (NBR), rubber and stainless steel construction variants.

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Lovejoy coupling spiders are ideal for transferring and absorbing load from coupling hubs connected to shafts for power transmission applications. These spiders are ideal for blowers, compressors, gear boxes, pumps, conveyors, and mixers.

LOVEJOY -

L Type Spiders, Solid Centers

StyleModelPrice (ex. VAT)
A68514410118$8.84
A68514410199$3.96
RFQ
A68514412274$58.91
A68514412001$49.45
A68514411724$36.24
A68514411494$32.27
A68514410621$15.64
A68514410194$9.96
B68514425307$19.42
A68514410622$9.64
RFQ
A68514410197$9.96
A68514410406$11.67
A68514410391$11.67
A68514410119$8.84
C68514437786$22.05
C68514410395$17.15
B68514411993$136.76
B68514411717$114.85
B68514412401$187.04
A68514412409$69.31
A68514411070$18.47
B68514412265$160.20
LOVEJOY -

GS Series Elastomeric Spiders

StyleModelPrice (ex. VAT)
A68514467256$54.80
RFQ
B68514467249$17.95
RFQ
C68514472247$132.27
RFQ
C68514472242$43.45
RFQ
C68514472248$181.42
RFQ
D68514467252$34.02
RFQ
B68514467253$34.02
RFQ
B68514467251$28.91
RFQ
C68514472245$81.25
RFQ
D68514467260$94.49
RFQ
C68514472246$90.71
RFQ
D68514467258$81.58
B68514467257$60.80
A68514467254$37.80
RFQ
B68514467261$94.49
RFQ
B68514467255$37.80
RFQ
LOVEJOY -

Snap Wrap, Flexible Spiders

Lovejoy snap wrap spider couplings provide shaft-to-shaft connection for power transmission and accommodating parallel & angular misalignment in industrial machinery, electric motors & compressors. These jaw couplings feature radially removable elastomeric cushions for ease-of-maintenance and no metal to metal contact for wear minimisation. SOX (NBR) rubber / urethane construction provides resistance against oil, sand, dirt, grease & moisture while ensuring fail-safe operation, even upon elastomeric cushion failure. These snap wrap spiders are capable of delivering torque up to 3510 inch-lb and the collar configuration of these snap wrap spiders can achieve the same speed as standard couplings since the collar is attached to one hub. Raptor Supplies, a trusted distributor of Lovejoy snap wrap spiders, also offers coupling spacers, jaw couplings, sleeve gear couplings, gaskets, hydraulic tanks and related accessories.

StyleModelPrice (ex. VAT)
A68514424672$116.75
B68514424670$61.56
B68514411495$44.93
C68514412413$163.98
C68514441170$100.49
B68514412275$72.15
A68514412002$61.93
B68514411071$29.80
B68514424673$171.91
B68514411725$53.24
B68514424669$46.44
B68514424671$74.04
C68514428284$162.53
C68514426093$169.65
LOVEJOY -

CJ Series Spiders

StyleModelPrice (ex. VAT)
A68514472259$72.15
B68514462077$245.67
RFQ
B68514462079$850.38
RFQ
C68514461450$27.40
RFQ
B68514462069$17.35
C68514461453$66.47
C68514461451$43.80
B68514462070$20.93
A68514472262$145.51
RFQ
D68514461465$37.80
RFQ
E68514461457$661.40
RFQ
A68514472258$35.91
RFQ
C68514461446$6.62
RFQ
B68514462073$47.24
RFQ
D68514461463$14.93
RFQ
D68514461462$11.35
RFQ
B68514462074$66.47
C68514461452$47.24
RFQ
C68514461448$17.35
C68514461447$15.64
C68514461456$245.67
RFQ
A68514472261$113.38
RFQ
B68514462076$151.18
RFQ
D68514461461$9.64
RFQ
D68514461466$47.24
RFQ
LOVEJOY -

L Type Spiders, Open Center

StyleModelPrice (ex. VAT)
A68514411486$95.95
A68514425310$43.80
B68514410411$17.15
C68514438099$160.20
D68514438098$136.76
E68514425767$1,322.82
F68514410968$18.47
G68514411073$54.38
G68514411497$77.44
B68514412417$169.65
G68514411727$91.80
G68514412004$281.89
B68514410626$9.75
B68514411729$105.02
B68514412006$125.80
H68514412612$100.49
F68514411492$32.27
B68514411499$58.16
B68514412280$135.25
I68514410393$11.67
F68514410620$15.64
E68514434517$536.69
F68514437881$58.91
A68514412400$187.04
F68514412406$69.31
StyleModelPrice (ex. VAT)
A68514471709$132.62
A68514471710$198.75
A68514471708$102.38
A68514471706$66.00
A68514471714$798.00
RFQ
LOVEJOY -

Spider, SOX NBR, Solid, AL150 Size, 80A Shore Hardness, Jaw Coupling Type

ModelItemPrice (ex. VAT)
68514418027AJ2XBT$59.98
LOVEJOY -

In-Shear Spider, 5 Inch Outside Dia., 8400 in-lbs Torque, LS225 Size

ModelItemPrice (ex. VAT)
68514478393AJ2XHD$633.05

Features

  • They have bronze / Hytrel / SOX rubber / urethane / polyurethane construction for absorbing the torque and pressure generated by shafts with ease while minimising the wear of coupling hubs.
  • Selected models have a solid centre design for keeping the shafts of driven and driver equipment separate by a safe gap.

Working Mechanism

  • These spiders have multiple teeth like sections that fit in between two coupling hubs.
  • The coupling hubs are connected to two shafts that are misaligned (parallel / angular).
  • These spiders absorb the pressure generated by the driver shaft through one coupling and transfer the pressure to the coupling hub connected to the driven shaft.
  • Their design also prevents the coupling hubs from making metal to metal contact.

Standards and Approvals

  • ISO 9001:2008

Frequently Asked Questions

What is a spider in a coupling?

Lovejoy jaw couplings are composed of three parts, i.e. an elastomer insert known as a spider and two metallic hubs on both the sides. These three separate parts are pressed together with the help of a jaw from each hub, both of which are fitted alternately with the lobes of the spider to form a Lovejoy spider coupling.

How do you install a spider coupling?

  • Before installing the hubs on the shaft, slide the retaining collar onto either shaft.
  • Insert the key into the keyway. Make sure that the key fits snugly in the keyway, with minimal side to side movement.
  • Slide a hub on each of the shafts over the keys and align the face of the hub with the end of the shaft.
  • Using a calibrated torque wrench, tighten the set screws.
  • Check alignment using either straight edge method or a dial indicator taking measurements at four locations 90 degrees apart.
  • Wrap the spider (in case of jaw in-shear units) around the hubs and insert a leg of the spider into each space between the coupling jaws.
  • Align the pins on the side of the collar with the grooves in the spider.
  • Recheck set screws for tightness and recheck the axial & angular alignment for accuracy.
  • Remove any material and tooling away from the coupling and shafts. Install the appropriate coupling guard as per OSHA requirements.
For a clear Lovejoy spider coupling installation manual, check out the following link:https://www.youtube.com/watch?v=I0D0nrwzzm0

Why is a spider used in a coupling?

The spider determines the torque rating of a coupling. It also affects the coupling's response to temperature, vibration, misalignment, chemicals and high speed. Lovejoy coupling spiders provide ease of installation of the coupling.

What is the significance of the colours of Lovejoy spiders?

  • Black - Lovejoy spiders with 80 Shore A hardness ensuring excellent damping properties.
  • Yellow - Spiders with 92 Shore A hardness used in hydraulic applications.
  • Red - Lovejoy coupling spiders with 95 / 98 Shore A hardness suitable in high torque applications.
  • Green - Lovejoy spiders with 64 Shore D hardness for humid environments.
  • Blue - Lovejoy spiders with 92 & 95 Shore A hardness for chemical resistance and high torque capabilities.
  • Tan / Bronze - Lovejoy coupling spiders with 55 Shore D hardness to ensure excellent chemical resistance.

What is the difference between open center & solid center Lovejoy spider designs?

The open center design of Lovejoy coupling spiders is suitable in close BE situations (distance between ends of driven and driving shafts), where units must be positioned as closely together as possible. However, this design has no full-diameter support, as the spider's legs are joined only by a thin segment of material. It has speed limitations up to 1750 rpm for NBR and 3600 rpm for Urethane / Hytrel.
The solid center design of Lovejoy spiders is suitable for general power transmission applications where the BE dimension will remain fairly constant and will be capable of affording a suitable gap.

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