AL Type – Aluminum Jaw Coupling

Lightweight aluminum version of the industry standard shaft coupling
Interchangeable with L and SS line of hubs (except AL150)
Corrosion resistant (finished bores passivated for additional protection)
Accommodates for angular and parallel shaft misalignment
Fail-safe – will still perform if elastomer “spider” fails
No metal to metal contact
Resistant to oil, dirt, sand, moisture, and grease

Product Specifics

2 Aluminum Hubs (with set screw)
1 Elastomer Spider (SOX, Urethane, Hytrel®, or Bronze)
Max Bore: 1.875in (48 mm)
Max Torque (standard SOX): 1,450in-lbs (163Nm)
Max Torque (Hytrel® or Bronze): 2,268in-lbs (256Nm)

Nominal Rated Torque Data (Standard Catalog)

	Max Bore		Spider Material
			SOX (NBR) Torque		Urethane Torque		Hytrel® Torque		Bronze Torque
Size	in	mm	in-lbs	Nm	in-lbs	Nm	in-lbs	Nm	in-lbs	Nm
AL050	0.625	16	26.3	3	39	4.5	50	5.6	50	5.6
AL070	0.75	19	43.2	4.9	65	7.3	114	12.9	114	12.9
AL075	0.875	22	90	10.2	135	15.3	227	25.6	227	25.6
AL090	1	25	144	16.3	216	24.4	401	45.3	401	45.3
AL095	1.125	28	194	21.9	291	32.9	561	63.4	561	63.4
AL099	1.188	30	318	35.9	477	53.9	792	89.5	792	89.5
AL100	1.375	35	417	47.1	626	70.7	1,134	128	1,134	128
AL110	1.625	42	792	89.5	1,188	134	2,268	256	2,268	256
AL150	1.875	48	1,450	163.8	—	—	—	—	—	—

Note: Bronze has a maximum RPM capability of 250 RPM.

Spider Performance Data (Standard Catalog)

SOX (NBR) Rubber (Standard Insert) - Nitrile Butadiene (Buna N) Rubber is a flexible elastomer material that is oil resistant, resembles natural rubber in resilience and elasticity.

Urethane - Greater torque capability than NBR (1.5 times), provides less dampening effect, and operates in a smaller temperature range. Good resistance to oil and chemicals. Not recommended for cyclic or start/stop applications.

Hytrel® - Flexible elastomer designed for high torque and high temperature operations. Excellent resistance to oil and chemicals. Not recommended for cyclic or start/stop applications.

Bronze - Rigid, porous oil-impregnated metal insert exclusively for low speed (max 250 RPM) applications requiring high torque capabilities. Not affected by extreme temperatures, water, oil, or dirt.

Material	Temperature Range	Misalignment		Shore Hardness	Dampening Capacity	Chemical Resistance	Color
		Angular	Parallel
SOX (NBR) Rubber	-40°F to 212°F (-40°C to 100°C)	1°	0.015	80A	High	Good	Black
Urethane	-30°F to 160°F (-34°C to 71°C)	1°	0.015	55D or 90-95A*	Low	Very Good	Blue
Hytrel®	-60°F to 250°F (-51°C to 121°C)	1/2°	0.015	55D	Low	Excellent	Tan
Bronze	-40°F to 450°F (-40°C to 232°C)	1/2°	0.01	-	None	Excellent	Bronze

* Sizes AL050 to AL110 shore hardness = 55D, Size AL150 shore hardness = 90-95A

Note: In addition to solid center spiders (most common), open center spiders are also available (to allow shafts of the driver and driven to be positioned within a short distance). Open center spiders offer shaft positioning flexibility but have a lower RPM capacity (1,750 RPM maximum for NBR, 3,600 maximum for Urethane and Hytrel®).

Alternative Jaw Products

For Standard or Stainless Steel: see L Type or SS Type
For Radial Removable Spiders: see SW Type or LC Type
For Radial Removable w/ Spacer: see RRS/RRSC Type
For Non-Fail Safe: see Jaw-In-Shear Type
For Backlash Free: see Curved Jaw – GS Type
For European Standard: see Curved Jaw – CJ Type
Or, for other coupling types: see Coupling Preselection Guide

Find a Distributor

Catalogs

Jaw Type Catalog (full catalog)

Stainless Steel Jaw (sub-catalog)

L-LOC Clamp Feature Sheet

Installation Instructions

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