APS - Harken Black Magic Blocks

Harken 57mm Black Magic AirBlocks

With high strength-to-weight ratios and free-rolling high-load roller bearings, these versatile blocks are the workhorses of the Harken line. Use for sail controls that see lots of action including mainsheet, runner, halyard, and spinnaker systems.

Airblocks are very easy to clean and service. they have few parts and no loose balls or rollers to misplace. unlike blocks that are riveted together, three fasteners allow for quick disassembly for service.

Use 57 mm Black Magic® AirBlocks® on offshore boats. These strong, lightweight blocks are sculpted aluminum, with Torlon® rollers and carbon-black balls for strength and UV protection. Rollers are housed in a unique center cage and are isolated for less friction. Blocks feature a three-way head system and come in high- and low-load configurations. Low-load AirBlocks have red isolators for identification and come with 316 stainless shackles, but are otherwise the same as high-load.

Part No.	Description	Sheave Dia.	Length		Weight		Shackle Dia.		Max Line		SWL		Break Strength
Part No.	Description	mm	in	mm	oz	g	in	mm	in	mm	lbs	kg	lbs	kg
H1950	Single/swivel/low-load	57	4-11/16	119	5.0	142	1/4	6	7/16	12	1655	750	3310	1500
H1951	Single/swivel/low-load/becket	57	5-1/2	140	5.5	155	1/4	6	7/16	12	1655	750	3310	1500
H1952	Double/swivel/low-load	57	5-3/16	132	10.1	286	5/16	8	7/16	12	2755	1250	5510	2500
H1953	Double/swivel/low-load/becket	57	6	152	10.6	302	5/16	8	7/16	12	2755	1250	5510	2500
H1954	Triple/swivel	57	5-3/16	132	13.2	375	5/16	8	7/16	12	4850	2200	9700	4400
H1958	Single/swivel/high-load	57	4-11/16	119	5.0	142	1/4	6	7/16	12	2500	1134	5000	2268
H1959	Single/swivel/high-load/becket	57	5-1/2	140	5.5	155	1/4	6	7/16	12	2500	1134	5000	2268
H1960	Double/swivel/high-load	57	5-3/16	132	10.1	286	5/16	8	7/16	12	3600	1633	7200	3267
H1961	Double/swivel/high-load/becket	57	6	152	10.6	302	5/16	8	7/16	12	3600	1633	7200	3267
H1965	Stand-up/high-load*	57	4-1/2	114	7.4	210	1/4	6	7/16	12	2500	1134	5000	2268
H3195	Loop Block	57	3	57	3.25	92	-	-	7/16	12	2500	1134	5000	2268

*1/4" (6mm) - Fastener circle: 1-15/32" (37mm)

H1950	Black Magic Airblock 57mm Single Swvl LL	Price: $140.62	H1951	Black Magic AirBlock 57mm Sgl Swvl/Bec LL	Price: $176.97
H1952	Black Magic AirBlock 57mm Double Swvl LL	Price: $276.36	H1954	Black Magic AirBlock 57mm Triple	Price: $410.74
H1958	Black Magic AirBlock 57mm Single Swvl HL	Price: $158.75	H1959	Black Magic AirBlock 57mm Sgl Swvl/Bec HL	Price: $193.47
H1960	57mm Black Magic AirBlock Dbl Swivel, HL	Price: $315.00	H1961	57mm Black Magic AirBlock Dbl Swivel, Becket, HL	Price: $334.27
H1965	Black Magic AirBlock 57mm Stand-up HL	Price: $271.96	H3195	57mm Loop Block	Price: $195.14

Harken 75mm Black Magic AirBlocks

With high strength-to-weight ratios and free-rolling high-load roller bearings, these versatile blocks are the workhorses of the Harken line. Use for sail controls that see lots of action including mainsheet, runner, halyard, and spinnaker systems.

Airblocks are very easy to clean and service. they have few parts and no loose balls or rollers to misplace. unlike blocks that are riveted together, three fasteners allow for quick disassembly for service. Low-load AirBlocks have red isolators for identification and come with 316 stainless shackles, but are otherwise the same as high-load.

75 mm Black Magic® AirBlocks® feature Torlon® roller bearings for strength and reduced wear. The unique center cage separates rollers for less friction. Sideload ball bearings are protected by sculpted aluminum sideplates. Dissimilar metals are isolated to minimize corrosion. Low-load blocks use Delrin® rollers and type 316 stainless steel shackles.

Like all AirBlocks®, the three-way head swivels/locks in front/side positions. Blocks are easily disassembled with a single Allen wrench.

Use straphead blocks with Loups® or straps aligned fore/aft or side to side.

Part No.	Description	Sheave Dia.	Length		Weight		Shackle Dia.		Max Line		SWL		Break Strength
Part No.	Description	mm	in	mm	oz	g	in	mm	in	mm	lbs	kg	lbs	kg
H1962	Spriddle/becket	75/57	8-7/8	225	16.8	476	5/16	8	9/16	14	5,000	2,268	10,000	4,536
H1969	Single/swivel	75	5-1/8	129	11.5	325	5/16	8	9/16	14	5,000	2,268	10,000	4,536
H1970	Single/swivel/becket	75	6-3/16	157	12.4	351	5/16	8	9/16	14	5,000	2,268	10,000	4,536
H1971	Double/swivel	75	5-1/4	134	25.7	728	3/8	10	9/16	14	7,500	3,402	15,000	6,804
H1974	Stand-up*	75	5-15/16	151	15.5	440	-	-	9/16	14	5,000	2,268	10,000	4,536
H1975	Spriddle	75/57	7-13/16	199	15.9	452	5/16	8	9/16	14	5,000	2,268	10,000	4,536
H3088	Straphead spriddle	75/57	7-3/32	180	12.8	362	-	-	9/16	14	5,000	2,268	10,000	4,536
H3090	Single/swivel/low-load	75	5-1/8	129	11.5	325	5/16	8	9/16	14	3,000	1,361	6,000	2,722
H3093	Spriddle/low-load	75/57	7-13/16	199	15.9	452	5/16	8	9/16	14	3,000	1,361	6,000	2,722
H3095	Double/straphead	75	4-11/16	119	19.2	545	-	-	9/16	14	7,500	3,402	15,000	6,804
H3196	Single loop block	75	3 15/16	100	7.27**	206**	-	-	9/16	14	5,000	2,268	10,000	4,536

*Uses 627 Padeye ** Weight without Loop

H1962	75mm Black Magic Airblock Spriddle, Becket	Price: $710.91	H1969	Black Magic AirBlock 75mm Single Swivel	Price: $380.47
H1970	AirBlock 75mm Single Swvl/Bec	Price: $429.88	H1971	AirBlock 75mm Double Swivel	Price: $713.37
H1974	AirBlock 75mm Stand-up	Price: $525.93	H1975	AirBlock 75mm Spriddle	Price: $651.90
H3088	AirBlock 75mm Straphead Spriddle	Price: $651.82	H3090	Airblock 75mm Single Swivel Low-Load Block	Price: $318.82
H3093	AirBlock 75mm Spriddle Low-Load	Price: $544.45	H3095	AirBlock 75mm Double Straphead	Price: $650.45
H3196	75mm Loop Block	Price: $337.39

Harken 100mm Black Magic AirBlocks

100 mm Black Magic® AirBlocks® are used on offshore boats where weight and performance are critical. They feature free-rolling, large-diameter aluminum sheaves with Torlon® roller bearings housed in a unique center cage. UV-resistant, carbon-black Delrin® balls carry sideloads. Corrosion is minimized by isolating dissimilar metals. Blocks are Hardkote-anodized and have 17-4 PH stainless headposts and shackles. Easily disassembled.

Part No.	Description	Sheave Dia.	Length		Weight		Shackle Dia.		Max Line		SWL		Break Strength
Part No.	Description	mm	in	mm	oz	g	in	mm	in	mm	lbs	kg	lbs	kg
H1993	Spriddle	100/75	11-11/16	297	26.5	752	3/8	10	5/8	16	7500	3402	15000	6804
H3007	Single/Swivel	100	8	203	20.1	570	3/8	10	5/8	16	7500	3402	15000	6804
H3008	Single/Swivel/Becket	100	9-1/2	241	22.6	641	3/8	10	5/8	16	7500	3402	15000	6804
H3009	Double/Swivel	100	8-15/16	227	48.3	1370	1/2	12	5/8	16	11000	4990	22000	9979
H3012	Stand-up*	100	7-11/18	195	30.3	859	-	-	5/8	16	7500	3402	15000	6804
H3199	Single Loop Block	100	5-1/16	130	13.06	370	-	-	5/8	16	7500	3402	15000	6804
H3089	Straphead Spriddle	100/75	9-1/4	235	24	680	-	-	5/8	16	7500	3402	15000	6804

*Uses 648 Padeye

H1993	AirBlock 100mm Spriddle	Price: $948.29	H3007	AirBlock 100mm Single Swivel	Price: $539.00
H3008	AirBlock 100mm Single Swvl/Bec	Price: $630.56	H3009	AirBlock 100mm Double Swivel	Price: $1,084.12
H3012	AirBlock 100mm Stand-up	Price: $671.53	H3089	AirBlock 100mm Straphead Spriddle	Price: $971.96
H3199	75mm Loop Block	Price: $503.49

Harken 125mm & 150mm Black Magic AirBlocks

125 mm & 150mm Black Magic AirBlocks® feature Torlon® rollers in a self-contained center cage. Rollers stay parallel for low-friction efficiency. UV-resistant, carbon-black Delrin® balls carry sideloads.

Used on offshore boats, these blocks offer a no “climb-out” deep groove sheave with radiused edges to protect line. Sculpted aluminum sideplates and thin-profile sheaves make these blocks very lightweight. No stainless-to-aluminum contact prevents corrosion.

Part No.	Description	Sheave Dia.	Length		Weight		Shackle Dia.		Max Line		SWL		Break Strength
Part No.	Description	mm	in	mm	oz	g	in	mm	in	mm	lbs	kg	lbs	kg
H3016	125 Single w/ Swivel	125	10	254	36.8	1042	1/2	12	3/4	19	11000	4990	22000	9977
H3018	125mm Stand-up*	125	9-1/16	230	43.9	1246	-	-	3/4	19	11000	4990	22000	9977
H3032	125mm Straphead	125	6-7/8	175	26	737	-	-	3/4	19	11000	4990	22000	9977
H3021	150mm Single w/ Swivel	150	12	305	61	1730	5/8	16	1	25	15000	6802	30000	13605
H3022	150mm Stand-up*	150	11-1/8	283	66	1878	-	-	1	25	15000	6802	30000	13605

*Uses 648 Padeye
** Uses 629 Padeye

H3016	AirBlock 125mm Single Swivel	Price: $675.27	H3018	AirBlock 125mm Stand-up	Price: $811.62
H3021	AirBlock 150mm Single Swivel	Price: $1,218.23	H3022	AirBlock 150mm Stand-up	Price: $1,289.55
H3032	AirBlock 125mm Straphead	Price: $534.48

Harken Black Magic Teardrop Blocks

Harken Black Magic Teardrop blocks are ideal for use as mastbase leads and for other applications where limited articulation or direct attachment is desired. When attached to an appropriate padeye, Teardrop blocks will not hit the deck when lines are slack, yet allow sufficient movement to ensure fair leads when jumping halyards. They are often used on permanent backstays of fractionally rigged boats where the backstay can be spliced directly to the head of the block.

The 3042 and 3046 are low-load blocks designed for use on production boats that have mounting posts on the mastcollar.

Part No.	Description	Sheave Dia.		Clevis Pin Dia.		Length		Weight		Max Line		SWL		Break Strength		Use Padeye
Part No.	Description	in	mm	in	mm	in	mm	oz	g	in	mm	lbs	kg	lbs	kg
H3042	57mm Mastcollar/Low-load	2-1/4	57	-	6	3-3/8	86	3.6	102	3/8	10	1655	750	3310	1500	-
H3044	57mm Padeye/High-load	2-1/4	57	5/16	8	3-3/8	86	3.9	110	3/8	10	2500	11334	5000	2268	627
H3046	75mm Mastcollar/Low-load	3	75	5/16	8	4-7/16	113	8.5	240	9/16	14	3000	1361	6000	2721	-
H3047	75mm Padeye/High-load	3	75	3/8	10	4-7/16	113	9	250	9/16	14	5000	2268	10000	4535	648/689
H3050	100mm Padeye	4	100	3/8	10	5-13/16	148	15.3	436	5/8	16	7500	3402	15000	6804	-

H3042	57mm Teardrop Mastcollar Low-Load	Price: $150.52	H3044	57mm Teardrop Padeye Hi-Load	Price: $162.58
H3046	75m Teardrop Mastcollar Lo-Load	Price: $340.69	H3047	75mm Teardrop Padeye	Price: $358.12
H3050	100mm Teardrop Padeye	Price: $533.41

Harken Black Magic Footblocks

Harken Black Magic Footblocks carry some of the highest loads imposed by running rigging. Use these blocks on big boats for genoas and spinnakers. Some Footblocks have integral line lockoffs that are intended to hold lines temporarily (they should not be used in place of line stoppers or clutches). Available in a wide range of sheave sizes for lines 7/16 to 1 inch in diameter depending on the block (see table below).

Harken Black Magic blocks have sculpted Teflon-impregnated Hardkote-anodized aluminum sideplates and sheaves, unique center caged Torlon roller bearings and captive carbon black ball bearings. Black Magic AirBlocks are made to be noncorrosive and UV resistant for high-load efficiency and excellent performance.

Part No.	Description	Sheave Dia.		Length		Height		Weight		Max Line		SWL		Break Strength		Fasteners (FH)
Part No.	Description	in	mm	in	mm	in	mm	oz	g	in	mm	lbs	kg	lbs	kg	in	mm
H1963	57mm Single/high-load	2-1/4	57	3-5/16	84	1	25	4.2	119	7/16	12	2500	1134	5000	2268	4 x 1/4	4 x 6
H1964	57mm Double/high-load	2-1/4	57	3-5/16	84	1-13/16	46	6.9	195	7/16	12	1650	750	3300	1500	4 x 1/4	4 x 6
H1967	57mm Single/high-load/lockoff*	2-1/4	57	3-5/16	84	1	25	5.3	150	7/16	12	2500	1134	7500	2268	4 x 1/4	4 x 6
H1968	57mm Double/high-load/lockoff*	2-1/4	57	3-5/16	84	1-13/16	46	9.6	272	7/16	12	1650	750	3300	1500	4 x 1/4	4 x 6
H1972	75mm Single	3	75	4-3/8	111	1-1/4	32	10.2	288	9/16	14	5250	2380	10500	4762	4 x 5/16	4 x 8
H1973	75mm Double	3	75	4-3/8	111	2-1/14	57	18	508	9/16	14	3465	1572	6930	3143	4 x 5/16	4 x 8
H3005	75mm Single/lockoff*	3	75	4-3/8	111	1-1/4	32	11.7	333	9/16	14	5250	2380	10500	4762	4 x 5/16	4 x 8
H3006	75mm Double/lockoff*	3	75	4-3/8	111	2-1/14	57	20.7	586	9/16	14	3465	1572	6930	3143	4 x 5/16	4 x 8
H3010	100mm Single	4	100	5-5/8	143	1-5/16	33	20.6	584	5/8	16	7500	3402	15000	6803	4 x 3/8	4 x 10
H3011	100mm Double	4	100	5-5/8	143	2-7/16	62	36.2	1025	5/8	16	4950	2250	9900	4500	4 x 3/8	4 x 10
H3017	125mm Single	5	125	6-15/16	176	1-11/16	43	35.7	1012	3/4	19	11000	4990	22000	9977	4 x 1/2	4 x 12
H3033	125mm Double	5	125	6-15/16	176	2-13/16	71.5	62.2	1762	3/4	19	7370	3350	14740	6700	4 x 1/2	4 x 12
H3023	150mm Single	6	150	8-1/16	205	1-7/8	48	60.6	1719	1	25	15000	6818	30000	13636	4 x 5/8	4 x 16

* - Lockoffs are intended to hold lines temporarily and should not be used in place of line stoppers or clutches.

H1963	57mm Footblock, Single, High-Load	Price: $146.92	H1964	57mm Footblock, Double, High-Load	Price: $256.43
H1967	57mm Footblock, Single, High-Load, Lockoff	Price: $204.51	H1968	57mm Footblock, Double, High-Load, Lockoff	Price: $346.28
H1972	75mm Footblock, Single	Price: $300.08	H1973	75mm Footblock, Double	Price: $519.02
H3005	75mm Footblock, Single, Lockoff	Price: $381.52	H3006	75mm Footblock, Double, Lockoff	Price: $664.44
H3010	100mm Footblock, Single	Price: $456.02	H3011	100mm Footblock, Double	Price: $802.96
H3017	125mm Footblock, Single	Price: $582.30	H3023	150mm Footblock, Single	Price: $1,022.21
H3033	125mm Footblock, Double	Price: $1,230.86

Harken Black Magic Air Runners

Harken Black Magic Air Runners are strong, lightweight blocks with extremely free-rolling sheaves with Torlon roller bearings in a center cage and sideload bearing strips to dampen rig vibration. Available in a wide range of sheave sizes for lines 7/16 to 1 inch in diameter depending on the block (see table below). Heads for these blocks are offered with parallel/perpendicular shackles. Tangs attach turnbuckles, toggles, and other fittings.

Harken Black Magic blocks have sculpted Teflon-impregnated Hardkote-anodized aluminum sideplates and sheaves. Black Magic blocks are made to be noncorrosive and UV resistant for high-load efficiency and excellent performance.

Part No.	Description	Sheave Dia.		Length		Weight		Clevis Pin Dia.		Max Line		SWL		Break Strength
Part No.	Description	in	mm	in	mm	oz	g	in	mm	in	mm	lbs	kg	lbs	kg
H3039	57mm Single	2-1/4	57	3-3/8	86	4.4	124	3/8	10	1/2	12	2500	1134	5000	2268
H1991	75mm Single	3	75	4-5/8	118	9.3	264	1/2	12.7	9/16	14	5000	2268	10000	4544
H1992	75mm Single w/ Becket	3	75	5-3/4	146	10.4	293	1/2	12.7	9/16	14	5000	2268	10000	4544
H3013	100mm Single	4	100	6-3/16	157	17.5	495	5/8	15.9	5/8	16	7500	3402	15000	6802
H3014	100mm Single w/ Becket	4	100	7-9/16	193	19.4	550	5/8	15.9	5/8	16	7500	3402	15000	6802
H3019	125mm Single	5	125	7-11/16	195	29.0	824	3/4	19	3/4	19	11000	4990	22000	9980
H3020	125mm Single w/ Becket	5	125	9-1/2	240	32.6	922	3/4	19	3/4	19	11000	4990	22000	9980
H3024	150mm Single	6	150	8-3/4	221	49.4	1400	3/4	19	1	25	15000	6802	30000	13605
H3025	150mm Single w/ Becket	6	150	10-13/16	275	55.2	1566	3/4	19	1	25	15000	6802	30000	13605

H1991	75mm Air Runner, Single	Price: $365.82	H1992	75mm Air Runner, Single, Becket	Price: $433.27
H3013	100mm Air Runner, Single	Price: $617.06	H3014	100mm Air Runner, Single, Becket	Price: $713.81
H3019	125mm Air Runner, Single	Price: $866.10	H3020	125mm Air Runner, Single, Becket	Price: $1,020.98
H3024	150mm Air Runner, Single	Price: $1,534.32	H3025	150mm Air Runner, Single, Becket	Price: $1,980.22
H3039	57mm Air Runner, Single	Price: $265.76

Harken Black Magic Air Runner Accessories

Heads are offered with parallel/perpendicular shackles. Tangs attach turnbuckles, toggles, and other fittings. No tools required for installation. Foam padded Block Socks easily install over Air Runners® to protect your blocks, deck, and crew

Heads

Tangs

Block Socks

Perpendicular Part No.

Parallel Part No.

Weight

Tang Part No.

Weight

Runner Pin Dia.

Checkstay Pin Dia.

Block Socks Part No.

Fits

3048

3.8

108

747

7/16

11.1

1/4

3035

1991

1992

3051

7.4

210

3052

5.5

156

5/8

15.9

3/8

3036

3013

3014

3030

13.8

381

3031

255

3/4

7/16

11.1

3037

3019

3020

3028*

3026*

537

3027*

310

3/4

1/2

12.7

3038

3024

3025

H3026	Air Runner Head for 75mm, Parallel	Price: $699.86	H3027	Air Runner Tang for 150mm	Price: $260.35
H3028	Air Runner Head for 150mm, Perpendicular	Price: $673.16	H3030	Air Runner Head for 125mm, Perpendicular or Parallel	Price: $446.34
H3031	Air Runner Tang for 125mm	Price: $231.70	H3035	Block Sock for 75mm	Price: $27.68
H3036	Block Sock for 100mm	Price: $28.82	H3037	Block Sock for 125mm	Price: $31.20
H3038	Block Sock for 150mm	Price: $33.31	H3048	Air Runner Head for 75mm, Perpendicular or Parallel	Price: $195.45
H3051	Air Runner Head for 100mm, Perpendicular or Parallel	Price: $247.98	H3052	Air Runner Tang for 100mm	Price: $200.24
H747	Air Runner Tang for 75mm	Price: $48.75