Structures of lubrication type PILLOBALLs. Structures of maintenance-free type PILLOBALLs. Outer ring. Bushing (Special copper alloy)
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1 PILLOBALL Spherical Bushins - Insert PILLOBALL Ro Ens - Insert PILLOBALL Ro Ens - Die-cast PILLOBALL Ro Ens - Maintenance-free Structure an Features PILLOBALLs are compact self-alinin spherical bushins that can support a lare raial loa an a bi-irectional axial loa at the same time. These bushins are classifie by sliin surface types, namely, insert type, ie-cast type an maintenance-free type. In the insert type, a spherical inner rin makes contact with the special copper alloy bushin with superior run-in properties. In the ie-cast type, a spherical inner rin makes irect contact with the bore surface of the boy of special zinc ie-cast alloy. In the maintenance-free type, a spherical inner rin makes contact with the special PTFE liner of maintenance-free type. Thus, a smooth rotational an oscillatory motion can be achieve with superior anti-wear an loain properties in each type. PILLOBALL Ro Ens have either a female threa in the boy or a male threa on the boy, an they can be easily assemble onto machines. PILLOBALLs are use in control an link mechanisms in machine tools, textile machines, packain machines, etc. The maintenance-free type is especially suitable for loain in one irection an is the best choice for machines in which oil must be avoie such as foo processin machines, or machines which cannot be re-lubricate. Structures of maintenance-free type PILLOBALLs Structures of lubrication type PILLOBALLs Spherical inner rin (Chromium plate) Spherical inner rin (Chromium plate) Bushin (Special copper alloy) Outer rin Bushin (Special copper alloy) Bushin (Special copper alloy) Boy (Zinc chromate plate) Spherical inner rin (Chromium plate) Spherical inner rin (Chromium plate) Special PTFE liner (Reinforce with copper alloy meshes) Boy (Zinc chromate plate) Boy (Zinc chromate plate) Special PTFE liner (Reinforce with copper alloy meshes) Spherical inner rin (Chromium plate) Boy (Zinc chromate plate) Spherical inner rin (Mirror-finishe) Boy (Die cast special zinc alloy) 2
2 s In PILLOBALLs, the types shown in Table are available. Table Insert type Die-cast type Spherical Bushins Lubrication type Maintenance-free type Ro en Ro en female threa male threa female threa male threa PHSPHSB POSPOSB PHS EC POS EC Lubrication PILLOBALL Spherical Bushins Insert This type has superior anti-wear properties an hih riiity. It consists of a spherical inner rin, an outer rin, an a bushin of special copper alloy with superior run-in properties inserte in between. The spherical surface of the inner rin is chromium plate after heat treatment an rinin. This type is assemble with a shaft an a housin. When especially lare raial an/or axial loas are applie, Spherical Bushins with molybenum isulfie (M0S2) treate inner an outer rins are recoene. (See pae 2.) Lubrication PILLOBALL Ro Ens Insert PHSPOSPHSB an POSB This type has superior anti-wear an anti-corrosion properties as well as hih riiity. It consists of a spherical inner rin of which spherical surface is chromium-plate after heat treatment an rinin, a boy with a zinc chromate treate outer surface, an an inserte bushin of special copper alloy havin superior run-in properties. This type inclues PHS an PHSB, which has a female threa in the boy, an POS an POSB, which has a male threa on the boy Lubrication PILLOBALL Ro Ens Die-cast The spherical inner rin of this type is mirror-finishe after heat treatment an is built in a boy of ie-cast special zinc alloy. The sliin surfaces of the inner rin an boy are in close contact with each other. Thus, this type is an economical ro en with superior anti-wear an loain properties. Maintenance-free PILLOBALL Ro Ens PHS ECPOS EC This type has superior anti-corrosion properties as the boy is zinc chromate treate an the spherical inner rin is chromium plate on the sphere surface after heat treatment an rinin. A special PTFE liner, reinforce with copper alloy meshes, which is superior in anti-wear properties with little creep eformation is use for linin on the sliin surface of the boy, an this type is maintenancefree. PHS EC, which has a female threa in the boy, an POS EC, which has a male threa on the boy, are available. Ientification The ientification of PILLOBALLs consists of a moel coe, a size an any supplemental coes as shown in the examples. Examples of ientification Example Example 2 Bore iameter Left han threa 2 Example Bore iameter Moel coe Moel coe Size PHS Moel coe Size PHSB Bore iameter /"=. ote 2 With reace nipple Flash type:p Zerk type :F Size Supplemental coe P EC Shapes of reace nipple are shown in Fi.. Riht han threa is inicate with no coe. Supplemental coe L Accuracy The accuracy of PILLOBALLs is shown in Tables 2 an. The maximum raial internal clearance of the insert type is 0.0. Table 2 Tolerance PHS POS PHS EC POS EC PHSB POSB Fit Fi. Shapes of rease nipple Dimension Bore ia. of inner rin Outsie ia. of outer rin With of inner rin With of outer rin Bore ia. of inner rin With of inner rin Bore ia. of inner rin With of inner rin Bore ia. of inner rin With of inner rin Dimension symbol unit: Tolerance Recoene fits for PILLOBALLs are shown in Table. D Table Tolerance of with B of inner rin of type ominal bore ia. of inner rin B C B B B H h H See Table. unit: Bs Deviation of a sinle inner rin with Over Incl. Hih Low Table Recoene fits Conition ormal operation Directionally ineterminate loain ote Selection of PILLOBALL Loa capacities of PILLOBALLs are etermine base on the allowable contact pressure on sliin surfaces an the strenth of boy for each type. Thus, a suitable type an size shoul be selecte base on the ynamic loa C an static loa shown in the imension tables. Loa Shaft h np Tolerance class Housin bore H This is applicable to PILLOBALL Spherical Bushins, Insert type. Dynamic loa The ynamic loa C is obtaine on the basis of the contact pressure on the sliin surface. The ynamic loa is use for calculatin the life. The ynamic loa consierin temperature increase is obtaine from the followin equation usin the temperature factor, which is a correction factor for the effect of PILLOBALL temperature. C t f t C () where, C t Dynamic loa consierin temperature increase, f t Temperature factor (Refer to Table.) C Dynamic loa, (Refer to the imension tables.) Table Temperature factor PHSPOS PHSBPOSB PHS EC POS EC Static loa The static loa is the maximum static loa that can be applie on the PILLOBALL without breakin the inner or outer rin of the PILLOBALL Spherical Bushin (or the inner rin or boy of the PILLOBALL Ro En), an without causin severe permanent eformation that will make the PILLOBALL unusable. 0. f t Temperature =0.2kf=2lbs. =0.0inch
3 Maximum Operatin Loa The recoene value of bushin loa is obtaine by multiplyin the ynamic loa C by a numerical factor, which iffers epenin on the bushin type an loa conition. For PILLOBALL Ro Ens, the static loa must also be consiere in eterminin the applicable bushin loa. Table shows the uielines for maximum operatin loa of PILLOBALLs. When axial loas are ae in aition to raial loas, benin stress occurs in the boy. Pay attention to this benin stress. Table Maximum operatin loa C 0.C PHSPOSPHSBPOSB C 0.C 0. PHS ECPOS EC C C Remark Equivalent raial loa PILLOBALLs can take raial an axial loas at the same time. When the manitue an irection of loas are constant, the equivalent raial loa can be obtaine by the followin formula. P F r YF a (2) where, P Equivalent raial loa, F r Raial loa, F a Axial loa, Y Axial loa factor (Refer to Table.) Table Axial loa factor Y F a F r PHSPOS PHSBPOSB 2 Unusable PHS EC POS EC Constant 2 Loa irection Alternate C is the ynamic loa an is the static loa. When the manitue of applie loa is within the value shown outsie the parenthesis, it is also within the value in the parenthesis. Unusable As the actual life is affecte by many factors such as the material of the sliin surface, the manitue an irection of loa, lubrication, sliin velocity, etc., the calculate life can be use as a measure of expecte service life. Life of lubrication type PILLOBALLs PHS POS PHSB POSB Confirmation of pv value Before attemptin to calculate the life, make sure that the operatin conitions are within the permissible rane by referrin to the pv iaram in Fi.2. When the operatin conitions are out of the permissible rane, please consult. The contact pressure p an the sliin velocity V are obtaine from the followin formulae. Contact pressure p 0P () C t V.2 k f () where, p Contact pressure, 2 P Equivalent raial loa, (Refer to Formula (2).) C t Dynamic loa consierin temperature increase, (Refer to Formula ().) V Sliin velocity, s k Sphere iameter, (Refer to the imensional tables.) 2 Oscillatin anle erees (Refer to Fi.2.) when, when rotatin, 0 f umber of oscillations per minute, cpm Permissible rane Oscillatin anle 2Life calculation The life of lubrication type PILLOBALLs can be calculate by the followin formulae. G.b b 2 b C t () k P L h G () 0f where, G Life (Total of oscillations) b Loa irectional factor (Refer to Table.) b 2 Lubrication factor (Refer to Table.) b Sliin velocity factor (Refer to Fi..) C t Dynamic loa consierin temperature increase, (Refer to Formula ().) P Equivalent raial loa, (Refer to Formula (2).) L h Life in hours, h f umber of oscillations per minute, cpm Table Loa irectional factor b an lubrication factor b 2 for lubrication type PILLOBALLs Loa irectional factor b Loa irection Fi. Oscillatin anle 2 Oscillatin anle Lubrication factor b 2 Perioical lubrication Constant Alternate one Reular Sliin velocity factor Loa irection Alternate Loa irection Constant Sliin velocity Fi. Sliin velocity factor for lubrication type PILLOBALLs 2 Life of maintenance-free type PILLOBALLs PHS ECPOS EC Confirmation of pv value Before attemptin to calculate the life, make sure that the operatin conitions are within the permissible rane by referrin to the pv iaram in Fi.. When the operatin conitions are out of the permissible rane, please consult. The contact pressure p an sliin velocity V are obtaine from Formulae () an () on pae. Contact pressure Permissible rane Sliin velocity Fi. pv iaram for maintenance-free type PILLOBALL Ro Ens Life Sliin velocity The life of PILLOBALLs is efine as the total of oscillatin motions urin which the PILLOBALLs can be operate without failure or malfunction ue to wear, increase in internal clearance, increase in sliin torque an operatin temperature, etc. Fi. 2 pv iaram of lubrication type PILLOBALLs =0.2kf=2lbs. =0.0inch
4 2Life calculation The life of maintenance-free type PILLOBALL Ro Ens is obtaine from the total sliin istance S which is iven in Fi. for the contact pressure p obtaine from Formula (). The total of oscillations an life in hours can be obtaine from the followin formulae. Table Loa irectional factor for maintenance-free type PILLOBALLs b Loa irection Loa irectional factor b ote G. b Sf V () L h G () 0f where, G Life (Total of oscillations) b Loa irectional factor (Refer to Table.) S Total sliin istance m f umber of oscillations per minute cpm V Sliin velocity s L h Life in hours h Constant Alternate This value is applicable when the loa chanes comparatively slowly. When the loa chanes rapily, please consult, as the factor ereases sharply. Lubrication Maintenance-free type PILLOBALL Ro Ens have a sliin surface line with a self-lubricatin linin. Therefore, they can be use without lubrication. Lubrication type PILLOBALLs are not provie with prepacke rease. Perform proper lubrication for use. Operatin without lubrication will increase the wear of the sliin contact surfaces an cause seizure. Oil Hole an Grease ipple Table shows the specifications of oil hole an rease nipple on the outer rin or boy. When a rease un that fits the rease nipple is require, please contact. For PILLOBALLs without an oil hole an rease nipple, apply rease irectly on the spherical surface. Table Specifications of oil hole an rease nipple PHS POS Bore iameter of inner rin Specification oil hole + oil roove one With rease nipple one oil hole With rease nipple With rease nipple Operatin Temperature Rane The maximum allowable temperature for Lubrication type PILLOBALLs is + C for the insert type an +0 C for the ie-cast type. The maximum allowable temperature for Maintenancefree type PILLOBALL Ro Ens is +0 C. Precautions for Use Tihtenin epth The recoene tihtenin epth of the screw into the PILLOBALL Ro En boy is shown below. Insert type an maintenance-free type:. times the nominal threa ia. or more. Die-cast type: 2 times the nominal threa ia. or more. 2 Allowable tiltin anle The allowable tiltin anle iffers epenin on the mountin structure as shown in Table. Table Allowable tiltin anle Bore iameter 2 ote PHSPOS PHS ECPOS EC α α 2 unit: eree α α 2 In the case of the series, α 2 is applicable in eneral. Contact pressure Total sliin istance Fi. Contact pressure an total sliin istance for maintenance-free type PILLOBALL Ro Ens PHS ECPOS EC one Table Allowable tiltin anle for inch series unit: eree With female threa PHSB 2 PHSB 2. PHSB With male threa POSB 2 POSB 2. POSB α α 2 PHSB POSB PHSB POSB PHSB POSB PHSB POSB PHSB POSB PHSB POSB PHSB POSB PHSB POSB =0.2kf=2lbs. =0.0inch
5 PILLOBALL Lubrication PILLOBALL Spherical Bushins Insert Lubrication PILLOBALL Ro Ens Insert /With Female Threa PHS Ientification Bounary imensions D C B r smin Ball ia.. &/.00!/ 2. %/.00 #/. &/.00 2.!/.0!/. #/.0!/ 2 2.2!!/. &/ 0.00 Dynamic loa C Static loa Ientification PHS PHS PHS PHS PHS PHS PHS PHS PHS PHS PHS PHS PHS PHS 2 PHS Threa M M 0. M 0. M M. M. M. M2 M2 M. M. M. M22 M2 M Bounary imensions G 2 C B l h l l W L r s min Ball ia. 0. %/ #/. &/.00!/ 2. %/.00 #/. &/.00 2.!/.0!/. #/.0!/ 2 2.2!!/. &/ 0.00 Dynamic loa C Static loa ote( ) Minimum allowable value of chamfer imensions r an r 2 Remarks. The outer rin has an oil roove an an oil hole. Remarks2. ot provie with prepacke rease. Perform proper lubrication for use. ote( ) Minimum allowable value of chamfer imension r Remarks. either oil hole nor rease nipple is provie for PHS with an inner rin bore iameter of or less. For others, a rease nipple is provie on the boy. Remarks2. ot provie with prepacke rease. Perform proper lubrication for use. Remarks. When a metric fine threa specification is require, please contact. 0 =0.2kf=2lbs. =0.0inch
6 PILLOBALL Lubrication PILLOBALL Ro Ens Insert /With Male Threa Inch series PILLOBALL Ro Ens Insert /With Female Threa POS PHSB Ientification POS POS POS POS POS POS POS POS POS POS POS POS POS POS 2 POS Threa M M 0. M 0. M M. M. M. M2 M2 M. M. M. M22 M2 M2 ote( ) Minimum allowable value of chamfer imension r Remarks. Bounary imensions Ball ia. G 2 C B l 2 h l r s min Dynamic loa C Static loa either oil hole nor rease nipple is provie for POS with an inner rin bore iameter of or less. For those with an inner rin bore iameter of to, an oil hole is provie on the boy. For others, a rease nipple is provie on the boy. Remarks2. ot provie with prepacke rease. Perform proper lubrication for use. Remarks. When a metric fine threa specification is require, please contact %/ #/. &/.00!/ 2. %/.00 #/. &/.00 2.!/.0!/. #/.0!/ 2 2.2!!/. &/ Ientification PHSB 2 PHSB 2. PHSB PHSB PHSB PHSB PHSB PHSB PHSB PHSB PHSB (.0). (.2).2 (.0).0 (.00). (.). (.0). (.).00 (.000). (.0).00 (.00).00 (.0000) Threa S class B -2UC (.) -2UC (.0) -2UF (.0) -2UF (.00) -2UF (.) -2UF (.0) -UF (.) -UF (.000) -UF (.0) -UF (.00) -UF (.00). (.). (.2). (.).0 (.0). (.).0 2. (.).2 (.). (.00). (.0). (2.0). (.). (.2). (.0). (.2). (.). (.0). (.).0 (.00). (.2). (.).0. (.0). (.2).2 (.). (.). (.).0 (.00). (.2). (.).0 (.0). (.). (.) ote( ) r s min stans for minimum allowable value of chamfer r. D Bounary imensions B B L l L L 2 W D Ball ia. D 2 r s min. (.).2 (.2). (.).02 (.). (.). (.). (.). (.) 2. (.) 2. (.) 2. (.2) 2. (.0) 2. (.). (.) 2. (.).02 (.). (2.) (2.) 0. (2.) 2. (.0). (.0).0 (.00). (.). (.). (.). (.). (.). (.0). (.0). (.0).2 (.).2 (.).0 (.).2 (.). (.) 2. (.02).2 (.). (.).2 (.).02 (.). (2.).0 (2.00).0 (2.). (.). (.). (.). (.2).0 (.0).0 (.0).0 (.) 2. (.02). (.). (.00). (.0). (2.). (.0). (.2).2 (.). (.). (.). (.2). (.).0 (.0). (.).0. (.00). (.0). (.2).2 (.). (.). (.). (.2). (.).0 (.0). (.).0. (.00).2 (.). (.). (.0). (.).0 (.00). (.).0 (.0). (.).0 2. (.). (.0) (.0) (.0) (.0) (.0) (.0) (.0) (.0) (.0) (.0) (.0) (.0). %/. #/. &/.0 # #/. 2.!#/.!%/ 2.!/. %/. &/ Dynamic loa C Static loa =0.2kf=2lbs. =0.0inch
7 PILLOBALL Inch series PILLOBALL Ro Ens Insert /With Male Threa Lubrication PILLOBALL Ro Ens Die-cast /With Female Threa POSB Ientification POSB 2 POSB 2. POSB POSB POSB POSB POSB POSB... (.0). (.2).2 (.0).0 (.00). (.). (.0). (.).00 (.000) Threa S class A -2UC (.) -2UC (.0) -2UF (.0) -2UF (.00) -2UF (.) -2UF (.0) -UF (.) -UF (.000) D. (.). (.2). (.).0 (.0). (.).0 2. (.).2 (.) Bounary imensions B. (.). (.2). (.0). (.2). (.). (.0). (.).0 (.00) B. (.0). (.2).2 (.). (.). (.).0 (.00). (.2). (.). (.).2 (.2). (.).02 (.). (.). (.). (.). (.) L 2. (.2). (.0).0 (.). (.).2 (2.). (2.).2 (2.). (.0) L.0 (.) 2. (.). (.0). (.2). (.). (.). (2.). (2.) L 2.0 (.00). (.).0 (.0).0. (.0). (.0). (.). (.00) r s min (.0) (.0) (.0) (.0) (.0) (.0) (.0) (.0) Ball ia.. %/. #/. &/.0 # #/. #/ 2.!#/.!%/ Dynamic loa C Static loa Ientification Threa M 0. M M. M. M. M2 M2 G 2 C B l h l l W L r s min M. M. M Bounary imensions Ball ia.. &/.00!/ 2. %/.00 #/. &/.00 2.!/.0!/. #/.0!/ 2 Static loa POSB. (.0) -UF (.0). (.00). (.2).0 (.0) 2. (.). (.). (2.).2 (.) (.0) 2.!/ POSB 2.00 (.00) -UF (.00). (.0). (.). (.) 2. (.). (.0).0 (2.). (.0) (.0). %/ POSB.00 (.0000) -UF (.00). (2.0).0. (.) 2. (.2).0 (.00). (.). (2.) (.0). &/ ote( ) r s min stans for minimum allowable value of chamfer r. ote( ) Minimum allowable value of chamfer imension r Remarks. A rease nipple is provie on the boy. Remarks2. ot provie with prepacke rease. Perform proper lubrication for use. Remarks. When a metric fine threa specification is require, please contact. =0.2kf=2lbs. =0.0inch
8 PILLOBALL Maintenance-free PILLOBALL Ro Ens With Female Threa Maintenance-free PILLOBALL Ro Ens With Male Threa PHSEC POSEC Ientification PHS EC PHS EC PHS EC PHS EC PHS EC PHS EC PHS EC PHS EC PHS EC PHS EC PHS EC PHS EC Threa M M 0. M 0. M M. M. M. M2 M2 M. M. M Bounary imensions G 2 C B l h l l W L r s min Ball ia. 0. %/ #/. &/.00!/ 2. %/.00 #/. &/.00 2.!/.0!/. #/.0!/ 2 Dynamic loa C Static loa Ientification POS EC POS EC POS EC POS EC POS EC POS EC POS EC POS EC POS EC POS EC POS EC POS EC Threa M M 0. M 0. M M. M. M. M2 M2 M. M. M. Bounary imensions Ball ia. G 2 C B l 2 h l r s min %/ #/. &/.00!/ 2. %/.00 #/. &/.00 2.!/.0!/. #/.0!/ 2 Dynamic loa C Static loa ote( ) Minimum allowable value of chamfer imension r Remarks. either oil hole nor rease nipple is provie. Remarks2. When a metric fine threa specification is require, please contact. ote( ) Minimum allowable value of chamfer imension r Remarks. either oil hole nor rease nipple is provie. Remarks2. When a metric fine threa specification is require, please contact. =0.2kf=2lbs. =0.0inch
Structure and Features
PILLOALL Spherica ushins - Insert PILLOALL Ro Ens - Insert PILLOALL Ro Ens - ie-cast PILLOALL Ro Ens - Maintenance-free Structure an Features PILLOALLs are compact sef-ainin spherica bushins that can support
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