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Jaw couplings

Twin Spring Coupling TSC range of jaw coupling alternatives, replaces Lovejoy, Belden, Ruland, Boston Gear, TB Woods, SKF, KTR, SIT, Martin, Guardian Couplings and more.

(One coupling can replace these different models and components, imagine the inventory savings alone)

Spline sizes include ¾” – 2 1/4″  keyway, with other metric splines available.

With no internal spider inserts to maintain & replace (regardless whether SOX, Buna-N/NBR, Hytrel or Bronze) we offer a maintenance free 1 piece coupling.

Now available in T6061 T6 aluminum as well as 4140 Steel Alloy.

Replaces L-070, L075, L090, L095, L099, L100, L110, L150, L190, L225, L276, C276

Boston Gear FC20-1 Shaft Coupler Body, Coupling Size FC20, Outside Diameter 2 in, Coupling Overall Length 3 11/16 in, System of Measurement Inch, Hub Material Carbon Steel, Maximum Speed 3,450 RPM, Keyway Depth 1/8 in, Keyway Width 1/4 in, Bore Diameter 1 in, Shaft Locking Type Set Screw, Bore Type Round Bore with Keyway, Jaw Profile Straight, Bore Tolerance +0.001/-0.000 in, Hub Diameter 1 3/4 in

Boston Gear FC20-3/4 Shaft Coupler hub

Size - Jaw Couplings FC20
Bore Dia. 3/4 in
Keyway Size Type 3/16 in x 3/32 in
Material - Hubs Steel
Outside Dia. 2 in
Assembled Coupling Length 3.69 in
Overall Length 3.69 in
UNSPSC 31163003
Product Description
Steel Jaw Coupling Hubs connect to drive shafts to provide dependable power transfer in high-temperature applications. A complete assembly requires two hubs and one jaw coupling spider, available separately.

Boston Gear FC20-5/8

Description

Shaft Coupler Body, Coupling Size FC20, Outside Diameter 2 in, Coupling Overall Length 3 11/16 in, System of Measurement Inch, Hub Material Carbon Steel, Maximum Speed 3,450 RPM, Keyway Depth 3/32 in, Keyway Width 3/16 in, Bore Diameter 5/8 in, Shaft Locking Type Set Screw, Bore Type Round Bore with Keyway, Jaw Profile Straight, Bore Tolerance +0.001/-0.000 in, Hub Diameter 1 3/4 in

Boston Gear FC20-9/16 Jaw coupling hub

  • Size - Jaw Couplings: FC20
  • Keyway Size Type: 1/8 in x 1/16 in
  • Material - Hubs: Steel
  • Outside Dia.: 2 in
  • Assembled Coupling Length: 3.69 in
  • Keyway Size: 1/8" x 1/16"
  • Overall Length: 3.69 in

Boston Gear XFCA12 Poly Insert

Boston Gear Polyurethane Spider Insert for Boston Gear FC12 and SSFC12

Key Features

  • Size - Jaw Couplings FC12
  • Material - Spiders Synthetic Rubber
  • Rated Torque 125 in-lb
  • Max. RPM 3,600 RPM
  • HP Rating @ 100 RPM 0.19

Boston Gear XFCBB45 BOST-BRONZ Shaft Coupling Insert

Boston Gear Bost-Bronz spider insert for Boston Gear FC45 and SSFC45
Mfr # XFCBB45 BRONZE INSERTS 08076

Boston Gear XFCR15 Rubber Shaft Coupling Insert

Boston Gear Rubber Spider Insert for Boston Gear FC15 and SSFC15

Boston Gear XFCR45 Rubber Shaft Coupling Insert

Boston Gear Rubber Spider Insert for Boston Gear FC45 and SSFC45
  • Size - Jaw Couplings: FC45
  • Material - Spiders: Synthetic Rubber
  • Rated Torque: 2,800 in-lb
  • Max. RPM: 1,800 RPM
  • HP Rating @ 100 RPM: 4.40
  • Temp. Range: -32 Degrees to 200 Degrees F
  • Coupling Size: FC45
  • XFCR45 RUBBER INSERT 08090

Lovejoy 38143 Size RRS090 Radially Removable Spacer Coupling Hub 0.625" Bore KW

Specifications

Description 

RRS090 HUB 5/8 3/16X3/32KW

Hub Style

1

Coupling Type

Jaw

Material

Sintered Iron

Color

Metallic/Gray

# of Jaws

3

Elastomeric Member

SOX (NBR) Rubber

Weight

0.57 lb

Lovejoy 62074 Size CJ 55 Curved Jaw Coupling Urethane Spider 98 Shore A Red

Specifications

Description 

CJ 55 SPIDER 98A RED

Type

Jaw

Spider Type

98 Shore A

Material

Polyurethane

Style

Open Center

Color

Red

Coupling Type

Elastomeric Insert

Stock Sizes

14 - 180

Weight

0.40 lb

 

Lovejoy 66873 Size CJ 28/38B Curved Jaw Coupling Hub, Powdered Metal Steel, Inch, 1.5 Bore, 3/8'' x 3/16'' KW

Specifications

Description 

CJ 28/38B HUB PM 1-1/2 3/8KW

Hub Style

B

Type

Curved Jaw Coupling Hubs

Hub Material

Powder Metal

Style

Bored

Color

Metallic

Coupling Type

Jaw

Weight

1.40 lb

Lovejoy 68514426088 L095 Standard Jaw Coupling Hub Sintered Iron 0.5in bore KW

Specifications

Description 

L095 HUB 1/2 1/8X1/16KW

Hub Style

1

Coupling Type

Jaw

Material

Sintered Iron

Color

Metallic

# of Jaws

3

Elastomeric Member

SOX (NBR) Rubber

Weight

0.79 lb

Weight (Complete Coupling w/ Max. Bores)

1.80 lb

Weight (Complete Coupling w/ Min. Bores)

1.30 lb