Ewart Chain - Outboard Roller

Cranked sided
138-COBRA M14

CHAIN	PITCH	ALLOW.	U.T.S.	PIN	ROLLER	SIDEBAR	MAX.	BUSH	BAR
NO.		LOAD		DIA.	DIA.	DEPTH	GEARING	DIA.	DIA.
	P			D	R	A	G	B	H	T
E9112	9.000	9,000	120,000	0.87	1.75	2.50	1.94	1.25	0.87	0.50
R2397	12.000	9,180	90,000	0.87	1.75	2.50	2.25	1.25	0.91	0.38
B5616	12.000	12,200	139,000	1.00	1.75	75MM	2.50	1.75	27MM	12MM
B5618	12.000	14,000	100,000	1.00	2.25	2.50	2.97	1.75	1.03	0.50
E12140	12.000	17,500	250,000	1.25	2.50	3.50	2.75	1.78	1.25	0.63
B5801	12.000	19,000	250,000	1.25	2.50	3.50	2.75	1.75	1.25	0.63
C2614	12.000	19,000	140,000	1.25	2.50	3.50	2.75	1.75	1.25	0.63
C2630	12.000	21,000	300,000	1.37	2.50	3.50	2.75	1.88	1.25	0.63
E12220	12.000	21,000	350,000	1.50	3.13	4.00	2.75	2.19	1.25	0.63
E12230	12.000	27,500	350,000	1.50	3.50	4.00	4.00	2.19	1.25	0.63
E2648	12.000	29,600	177,000	1.63	3.25	4.00	3.69			0.75

Straight sided

139-COBRA STRAIGHT

CHAIN	PITCH	ALLOW.	U.T.S.	PIN	ROLLER	SIDEBAR	MAX.	BUSH	BAR
NO.		LOAD		DIA.	DIA.	DEPTH	GEARING	DIA.	DIA.
	P			D	R	A	G	B	H	T
09060E	6.000	6,350	60,000	0.75	1.63	2.00	1.50	1.13	1.25	0.38
1796E	6.000	7,500	100,000	0.87	1.63	2.25	1.50	1.25	1.25	0.38
B5509E	9.000	7,500	100,000	0.87	1.63	2.25	1.50	1.25	1.25	0.38

Cobra assembly
Exploded view showing assembly of Malleable Iron clamping bracket, Outboard Roller and sleeves both of white Iron and steel square sectioned through bar.

The tabular dimensions and weights are approximate and are not binding.
Design improvements may result in variation from the published figures and verification is recommended.