Index | Use chart | 57 mm | 75 mm | 100 mm | 125 mm & 150 mm | Teardrop | Crossover | Mastbase Halyard Lead & Flip-Flop | Footblocks | AirRunners | Stainless Steel Runners | Opening Foot Blocks | Snatch | ESP Blocks | Stainless Steel ESP | Stainless Steel Blocks | Specifications

Big Boat blocks > AirRunners

Black Magic AirRunners2 are strong, lightweight blocks with extremely free rolling sheaves. Blocks feature Torlon roller bearings in a center cage for strength. Sideload bearing strips dampen rig vibrations.

Integral sideplate bails and recessed cotter key help produce a smooth design that won't snag lifelines.

Heads are offered with parallel/perpendicular shackles. Tangs attach turnbuckles, toggles and other fittings. No tools required for installation.

Foam padded Block Socks easilly install over Air Runners to protect your block, deck, and crew.

Cotter key protected in sculpted detent Quiet - sideload bearing strips dampen rig vibrations Clean, smooth design won't snag lifelines Caged roller bearings for high-load efficiency

1991 3013 3019 3024

1992 3014

3039

3020 3025

3035 3036 3037 3038

3026

3028

3048 3051 3030

747	3052 3031 3027

Shackle Post

Runner Blocks

Part No.	Description	Sheave		Length		Weight		Clevis pin		Max Line		Safe working load		Breaking strength
		in	mm	in	mm	oz	g	in	mm	in	mm	Ib	kg	Ib	kg
1991	Single	3	75	45/8	118	9.3	264	1/2	13	9/16	14	5000	2268	10000	4544
1992	Single/becket	3	75	53/4	146	10.3	293	1/2	13	9/16	14	5000	2268	10000	4544
3013	Single	4	100	63/16	157	17.5	495	5/8	16	5/8	16	7500	3402	15000	6804
3014	Single/becket	4	100	79/16	193	19.4	550	5/8	16	5/8	16	7500	3402	15000	6804
3019	Single	5	125	711/16	195	29.0	824	3/4	19	3/4	19	11000	4990	22000	9980
3020	Single/becket	5	125	91/2	240	32.6	922	3/4	19	3/4	19	11000	4990	22000	9980
3024	Single	6	150	83/4	221	49.4	1400	3/4	19	1	25	15000	6802	30000	13605
3025	Single/becket	6	150	1013/16	275	55.2	1566	3/4	19	1	25	15000	6802	30000	13605
3035	Block Sock	Fits 75 mm Air Runners®
3036	Block Sock	Fits 100 mm Air Runners®
3037	Block Sock	Fits 125 mm Air Runners®
3038	Block Sock	Fits 150 mm Air Runners®
3039	Single	21/4	57	33/8	86	4.4	124	3/8	10	7/16	12	2500	1134	5000	2268

Heads Perpendicular Part No. Parallel Part No. Weight oz g 3048 3048 3.8 108 3051 3051 7.4 210 3030 3030 13.8 381 3028* 3026* 19 537

Tangs Tang Part No. Weight Runner pin Checkstay pin Fits oz g in mm in mm 747 3 85 7/16 11.1 1/4 6 1991/1992 3052 5.5 156 5/8 15.9 3/8 10 3013/3014 3031 9 255 3/4 19 7/16 11.1 3019/3020 3027* 11 310 3/4 19 1/2 12.7 3024/3025

* - 150 mm Rummer post and tang adapters made to order

Index | Use chart | 57 mm | 75 mm | 100 mm | 125 mm & 150 mm | Teardrop | Crossover | Mastbase Halyard Lead & Flip-Flop | Footblocks | AirRunners | Stainless Steel Runners | Opening Foot Blocks | Snatch | ESP Blocks | Stainless Steel ESP | Stainless Steel Blocks | Specifications