Hauling Pulleys

In general, I don't collect caving, climbing and rescue pulleys, but I do have a collection of hauling pulleys, i.e., pulleys with built-in cams. These allow the user to reset for the next pull while the cam holds the load. There are two principle uses for hauling pulleys:

1. General Hauling: There are a number of situations in caving and climbing (especially big-wall climbing) where pulleys are used to haul packs and equipment. High strength is less of a concern than light weight. The Rock Exotica Wall Hauler, Ural-Alp and USHBA Mountain Works Hauler are designed for this purpose. The Kong Block Roll, Petzl Mini-Traxion, and USHBA Mountain Works Hogwauler are primarily for general hauling but are also rated for live loads. The CMI Single Micro Hauler is specifically designed for rescue but might work just as well as a wall hauler. If you don't have any of these handy, you might want to know the Garda Knot.
2. Rescue Hauling: Strength is more important when human life is supported, although I’d argue that a low failure probability is a more appropriate criteria (the two are related, but not identical). Weight is not as much of a concern, nor is cost. The CMI Uplift, RSI Rescue Hauling Pulley, and SRT Rescuemates fit into this category. The CMI Micro Haulers are light-weight devices specifically designed for rescue.

When using pulleys in mechanical advantage systems, one should ensure that the mechanical advantage gained by the system does not allow one to apply forces that would damage any component of the system, especially a human body. I feel that too little attention is given to this.

In the ID field, I used a green background for pulleys that the manufacturer rated for human life, and a red background for those that

Image	ID ⇓	Device ↓	Description	Acquired	Weight ↓	Height ↓	Width ↓	Thickness ↓	Std. volume ↓
	3929	Climbing Technology Cric	Stamped frame /w SS cam, cord, 1 Al sheave, swinging front plate.	Inner Mountain Outfitters, 2024	142	93	69	30	195
	2773	CMC Rescue	Extruded/milled Al frame /w Al cam, 2 Al sheaves,, swinging side plates	Melanie Joyce, 2020	1501	327	108	63	2225
	822 2661	CMI Double Micro Hauler	Stamped Al frame /w steel cam, 2 Al sheaves, swinging side plates	On Rope 1, 2005 Bob Thrun Collection, 2017	243	150	53	61	485
	832	CMI Single Micro Hauler	Stamped Al frame /w steel cam, Al sheave, swinging side plate	On Rope 1, 2005	192	154	53	40	328
	719 2657	CMI Uplift	Extruded Al frame /w steel cam, cam safety & cord, 2 Al sheaves, swinging side plates.	John E. Weinel, Inc., 1999 Bob Thrun Collection, 2017	1054	257	100	62	1593
	2759	Doug Phillips	Al side plates, Al sheave, Al eccentric cam, non-commercial	John Middendorf, 2019	240	121	68	44	362
	2795	Edelrid Spoc	Stamped Al side plates, Al sheave, SS eccentric cam	CampSaver.com, 2020	60	62	46	24	67
	3840	Fixe	Stamped Al side plates, Al sheave, suspended stamped Al cam frame /w Al eccentric cam & hold-open pin.	Raúl Macia Sanchez, 2023	285	178	62	46	512
	885	Hall	Steel, sheave, cam on lower arm lever	Kurt Stone, 2008	405	189	86	29	475
	3733	heightec Hurricane Pro D43, Version A	Stamped steel frame, plastic sheave, SS eccentric cam	Jordan Krause, 2022	624	204	80	30	495
	3743	heightec Hurricane Pro D43, Version B	Stamped steel frame, plastic sheave, SS eccentric cam, plastic safety	Sarah Potter, 2022	532	200	71	31	446
	1601	heightec-PMI Haul Cam D43A	Stamped steel frame, plastic sheave, SS eccentric cam	On Rope 1, 2008	633	202	84	31	525
	2691 3737	Ice Rock Elephanti	Stamped Al side plates, Al sheave, SS eccentric cam	Ice Rock, 2017 Vertical (Вертикаль), 2022	163	99	59	34	201
	3732	International Safety Components (ISC) RP702	Milled Al side plates, Al sheave, SS eccentric cam	Daniel Soleau, 2022	664	220	84	37	682
	1765	Kong Block Roll, Version A	Stamped Al side plates, Al sheave, plastic safety. Attaches to modular ascender. Specs include ascender.	Geoffrey Storey, 2012	512	282	79	34	759
	720	Kong Block Roll, Version B	Stamped Al side plates, Al sheave, attaches to Kong Modular ascender. Specs include ascender.	Inner Mountain Outfitters, 1999	526	278	79	35	769
	3780	Kong Block Roll, Version C	Stamped Al side plates, Al sheave, riveted to modular ascender.	J. Raaf, 2022	512	279	80	36	795
	1670	Kong Block Roll, Version D	Stamped Al side plates, Al sheave, riveted to modular ascender.	Amazon.com, 2010	510	276	79	35	752
	1715 2660	Kong Miniblock Futura	Milled Al side plates, Al sheave, SS eccentric cam	On Rope 1, 2010 Bob Thrun Collection, 2017	165	132	48	32	201
	1780 1783	Krok Block Stop (e18.pu-stop)	Stamped steel frame /w pivoting sheave arm, Al sheave	Gear4Rocks, 2012 Krok (Alex Dniprovskyy & Alex Kostromitinov)	444	176	60	42	441
	2826	Krok Friendship 2 (Дружба-2)	Stamped steel frame, 2 Al sheaves, 2 Al cams, lever & shock cord release mechanism	Krok, 2021	492	128	113	48	695
	2825	Kong Friendship 2.1 (Дружба-2.1)	Stamped steel frame, 2 Al sheaves, 2 Al cams /w cam safeties	Krok, 2021	550	138	86	53	635
	1779	Krok Promalp Traxion	Stamped Al Frame, steel cam /w spring-loaded pin catch, Al sheave, swinging side plate	Gear4Rocks, 2012	280	124	56	29	202
	1742	Petzl Micro-Traxion	Stamped Al side plates, Al sheave, SS eccentric cam /w hold-open latch	Expé-Spelemat, 2012	81	67	53	24	85
	731 2659	Petzl Mini-Traxion, Version A	Stamped Al side plates, Al sheave, SS exxentric cam /w hold-open catch	Inner Mountain Outfitters, 1999 Bob Thrun Collection, 2017	173	60	86	34	174
	3908	Petzl Mini-Traxion, Version B	Stamped Al side plates, Al sheave, SS eccentric cam, shielded gate	On Rope 1, 2023	149	85	59	28	142
	3709	Petzl Nano-Traxion	Stamped Al side plates, Al sheave, SS eccentric cam	CanyonZone.com - Gertjan van Pelt, 2022	51	49	53	21	53
	758	Petzl Pro-Traxion, Version A	Stamped Al side plates, Al sheave, SS eccentric cam	Inner Mountain Outfitters, 2001	288	126	66	36	298
	1822	Petzl Pro-Traxion, Version B	Stamped Al side plates, Al sheave, SS eccentric cam, plastic latch & cover	On Rope 1, 2014	260	118	70	35	288
	1647 2663	Petzl Wall Hauler	Stamped Al side plates, Al sheave, suspended stamped Al cam frame /w steel eccentric cam & hold-open pin.	Sean Stewart, 2009 Bob Thrun Collection, 2017	233	154	66	50	504
	691	Rescue Systems Inc. Rescue Hauling Pulley	Extruded Al frame /w steel cam, cam safety, opening cable, safety/hold-open pin, 2 Al sheaves, swinging side plates	John E. Weinel, Inc., 1995	725	227	78	78	1381
	2827	Rock Empire Self–blocking Pulley	Stamped Al side plates, Al sheave, suspended stamped Al cam frame /w steel eccentric cam & hold-open pin.	Ondřej Belica / Climbing CZ sro, 2022	391	190	74	40	560
	666 2663 3897	Rock Exotica Wall Hauler (Model 302010)	Stamped Al side plates, Al sheave, suspended stamped Al cam frame /w steel eccentric cam & hold-open pin.	Gendarme, 1991 Bob Thrun Collection, 2017 On Rope 1, 2023	236	153	66	51	515
	3952	Rock-N-Rescue	Extruded Al frame /w steel cam, cam safety & cord, 2 Al sheaves, swinging side plates.	justkillingtime53, 2024	1051	264	103	63	1711
	1796	SMC Advance Tech HX	Milled central rib, stamped Al side plates, Al sheaves, Al cam, engagement mechanism	On Rope 1, 2012	270	129	70	50	447
	3756	SRT RM2 Rescuemate	Extruded Al frame /w steel cam, cam safety & cord, Al sheave, swinging side plate.	Inner Mountain Outfitters, 1994	695	254	80	40	813
	3757 2658	SRT RM22 Rescuemate	Extruded Al frame /w steel cam, cam safety & cord, 2 Al sheaves, swinging side plates.	Inner Mountain Outfitters, 1994 Bob Thrun Collection, 2017	902	254	80	63	1280
	796	Ural-Alp (Урал АлЬп) Big Hauler 34.06	Painted side plates, Al sheave, toothed steel eccentric cam	Ural Sport, 2004	541	126	132	43	712
	797	Ural-Alp (Урал АлЬп) Double-Hauler	Engine-ruled Ti side plates, 2 sheaves, eccentric cam	Ural Sport, 2004	173	104	70	40	288
	3755	Ural-Alp (Урал АлЬп) Hauler, Version A	Stamped Ti side plates, Al sheave, Ti cam, hold-open pin	John E. Weinel, Inc., 1994	115	88	67	29	171
	3825	Ural-Alp (Урал АлЬп) Hauler, Version B	Stamped Ti side plates, Brass-plate Al sheave, Ti cam, hold-open pin	NOCO Gear, 2022	117	87	67	30	175
	732 2654	Ural-Alp (Урал АлЬп) Hauler, Version C	Stamped Ti side plates, Brass-plate Al sheave, Ti cam, hold-open pin	USHBA Mountain Works, 2000 Bob Thrun Collection, 2017	116	87	67	29	170
	2726	USHBA Mountain Works Hauler Prototype	Stamped Ti side plates, Al sheave on spring-loaded type-1 locking lever Ti cam, separate release lever with two rollers.	Yinetyme (Nocogear), 2018	248	104	192	81	1597
	733 2621	USHBA Mountain Works Hauler	Stamped Ti side plates, Al sheave, Ti cam, hold-open pin	USHBA Mountain Works, 2000 Bob Thrun Collection, 2017	120	78	74	30	175
	734	USHBA Mountain Works Hogwauler Prototype #2	Stamped Ti side plates, Al sheave on spring-loaded type-1 locking lever Ti cam, 139 mm. release lever	USHBA Mountain Works, 2000	327	133	82	34	376
	735 2621	USHBA Mountain Works Hogwauler, Version A	Stamped Ti side plates, Al sheave on spring-loaded type-1 locking lever Ti cam, hold-open pin	USHBA Mountain Works, 2000 Bob Thrun Collection, 2017	293	165	88	34	494
	1654	USHBA Mountain Works Hogwauler, Version B	Stamped Ti side plates, Al sheave on spring-loaded type-1 locking lever Ti cam, hold-open pin	Kim Graves, 2009	299	167	87	34	495
	2784	Vento (Венто)	Stamped Al side plates, Al sheave, suspended stamped Al cam frame /w steel eccentric cam & hold-open pin.	Artyom Babin (Артём Бабин), 2019	403	188	79	39	581
	3734	Vertical (Вертикаль) Block-clamp (steel), Version A	Stamped steel side plates, steel sheave, cast steel eccentric cam, hold-open pin.	Artyom Babin (Артём Бабин), 2022	352	127	78	32	320
	3735	Vertical (Вертикаль) Block-clamp (steel), Version B	Stamped steel side plates, steel sheave, cast steel eccentric cam, hold-open pin.	Vertical (Вертикаль) via Artyom Babin (Артём Бабин), 2022	356	107	90	38	366
	2704	Xinda	Stamped Al side plates, Al sheave, suspended stamped Al cam frame /w steel eccentric cam, hold-open safety on cam	Suntek, 2017	398	187	83	40	618

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