Metric Screw End Conditions

It is no surprise that Joyce/Dayton offers complete end machining to fit our standard bearing blocks. But did you know that we also provide finished machining for customer-specified end requirements?

Note: Our bearing mounts are sealed and greased at the factory. They are suited for high duty cycle conditions where frictional forces cause a thermal transfer of energy into the screw assembly. The resulting thermal migration will cause the screw to expand axially. Screw end machining and fit of the bearing support are designed to account for this expansion.

Product Media

END FIXITY SB BEARING BLOCKS AND SCREW END CONDITIONS DB BEARING BLOCKS AND SCREW END CONDITIONS FB BEARING BLOCKS AND SCREW END CONDITIONS SCREW AND NUT SELECTION GUIDE

SB Screw End Conditions

simple single bearing block SB

Screw Number	Bearing Mount No.	o S1	A1	A2	A3	A4	A5	A6	o A7	A8	A9	A10	A11
TS020R005A	SB-12	0.4726	0.890	0.450	0.56	0.127	0.472	1.029	1.25	.469-32 UNS	W-01	N-01	6301
TS022R005A	SB-12	0.4723	0.890	0.450	0.56	0.125	0.472	1.029	1.25	.469-32 UNS	W-01	N-01	6301
TS026R006A	SB-15	0.5908	0.930	0.490	0.56	0.127	0.512	1.094	1.38	.586-32 UNS	W-02	N-02	6302
	SB-15	0.5905	0.930	0.490	0.56	0.125	0.512	1.094	1.38	.586-32 UNS	W-02	N-02	6302
TS030R006A	SB-20	0.7877	1.070	0.570	0.63	0.190	0.590	1.305	1.75	.781-32 UNS	W-04	N-04	6304
	SB-20	0.7873	1.070	0.570	0.63	0.188	0.590	1.305	1.75	.781-32 UNS	W-04	N-04	6304
TS040R009A	SB-25	0.9846	1.190	0.650	0.70	0.190	0.669	1.420	2.06	.969-32 UNS	W-05	N-05	6305
	SB-25	0.9842	1.190	0.650	0.70	0.188	0.669	1.420	2.06	.969-32 UNS	W-05	N-05	6305
TS055R012A	SB-30	1.1814	1.275	0.720	0.70	0.190	0.748	1.587	2.43	1.173-18 UNS	W-06	N-06	6306
	SB-30	1.1810	1.275	0.720	0.70	0.188	0.748	1.587	2.43	1.173-18 UNS	W-06	N-06	6306

FB Screw End Conditions

simple single bearing block SB

Screw Number	Bearing Mount No.	oS1	oS2	A1	A2	A3	A4	A5	A6	A7	A8	A9	A10	A11
TS020R005A	FB-12	0.4726	0.406	4.30	3.00	2.35	1.850	0.472	0.923	0.038	.469-32 UNS	W-01	N-01	1/8 x 5/8
TS022R005A	FB-12	0.4723	0.405	4.30	3.00	2.35	1.850	0.472	0.923	0.038	.469-32 UNS	W-01	N-01	1/8 x 5/8
TS026R006A	FB-15	0.5908	0.500	4.62	3.31	2.73	2.000	0.512	0.995	0.035	.586-32 UNS	W-02	N-02	1/8 x 5/8
	FB-15	0.5905	0.499	4.62	3.31	2.73	2.000	0.512	0.995	0.035	.586-32 UNS	W-02	N-02	1/8 x 5/8
TS030R006A	FB-20	0.7877	0.625	5.05	3.80	3.10	2.375	0.590	1.217	0.035	.781-32 UNS	W-04	N-04	3/16 x 5/8
	FB-20	0.7873	0.624	5.05	3.80	3.10	2.375	0.590	1.217	0.035	.781-32 UNS	W-04	N-04	3/16 x 5/8
TS040R009A	FB-25	0.9846	0.750	6.06	4.50	3.75	2.815	0.669	1.500	0.083	.969-32 UNS	W-05	N-05	3/16 x 1
	FB-25	0.9842	0.749	6.06	4.50	3.75	2.815	0.669	1.500	0.083	.969-32 UNS	W-05	N-05	3/16 x 1
TS055R012A	FB-30	1.1814	1.000	6.67	4.92	4.20	3.300	0.748	1.828	0.075	1.173-18 UNS	W-06	N-06	1/4 x 1
	FB-30	1.1810	0.999	6.67	4.92	4.20	3.300	0.748	1.828	0.075	1.173-18 UNS	W-06	N-06	1/4 x 1

DB Screw End Conditions

simple single bearing block SB

Screw Number	Bearing Mount No.	oS1	oS2	A1	A2	A3	A4	A5	A6	A7	A8	A9
TS020R005A	DB-12	0.4726	0.406	3.29	2.00	1.566	0.472	0.000	.469-32 UNS	W-01	N-01	1/8 x 5/8
TS022R005A	DB-12	0.4723	0.405	3.29	2.00	1.566	0.472	0.000	.469-32 UNS	W-01	N-01	1/8 x 5/8
TS026R006A	DB-15	0.5908	0.500	3.59	2.59	2.145	0.512	0.040	.586-32 UNS	W-02	N-02	1/8 x 5/8
	DB-15	0.5905	0.499	3.59	2.59	2.145	0.512	0.040	.586-32 UNS	W-02	N-02	1/8 x 5/8
TS030R006A	DB-20	0.7877	0.625	4.00	2.88	2.378	0.590	0.040	.781-32 UNS	W-04	N-04	3/16 x 5/8
	DB-20	0.7873	0.624	4.00	2.88	2.378	0.590	0.040	.781-32 UNS	W-04	N-04	3/16 x 5/8
TS040R009A	DB-25	0.9846	0.750	4.45	2.89	2.328	0.669	0.000	.969-32 UNS	W-05	N-05	3/16 x 1
	DB-25	0.9842	0.749	4.45	2.89	2.328	0.669	0.000	.969-32 UNS	W-05	N-05	3/16 x 1
TS055R012A	DB-30	1.1814	1.000	5.33	3.60	3.047	0.748	0.063	1.173-18 UNS	W-06	N-06	1/4 x 1
		1.1810	0.999